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Symptoms » Impaired vision » Glossary
 

Glossary for Impaired vision

Medical terms related to Impaired vision or mentioned in this section include:

  • 18p minus syndrome: A rare chromosomal disorder where a portion of chromosome 18 is missing which is characterized by mental and growth deficiencies, drooping upper eyelid and prominent ears. The type and severity of symptoms is determined by the amount of genetic material that is missing.
  • 2-Hydroxyglutaricaciduria: A rare metabolic disorder characterized by high levels of a certain chemical (2-Hydroxyglutaric) which causes a serious progressive neurological disease and damage to the brain. The features of this disorder are variable and some cases are milder than others.
  • 2q deletion: A rare chromosomal disorder where part of the long arm (q) of chromosome 2 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
  • 3 alpha methylglutaconicaciduria, type 3: A rare genetic condition where a gene mutation prevents the production of certain protein which leads to a build-up of an acid (3-methylglutaconic acid) which can have a negative impact on the body. The condition is characterized mainly by damage to the optic nerve.
  • Abetalipoproteinemia: A rare genetic disorder involving fat metabolism. The disorder is also known as Bassen-Kornzweig syndrome. Signs of the disease include acanthocytosis, little or no serum beta-lipoproteins and hypocholesterolemia. In severe cases, steatorrhea, ataxia, nystagmus, motor incoordination and retinitis pigmentosa may also occur.
  • Abruzzo Erickson syndrome: A genetic disorder characterized by a combination of features including cleft palate, coloboma and deafness.
  • Absence of septum pellucidum and septo-optic dysplasia: A rare birth defect where a thin membrane in the middle of the brain is missing. This brain abnormality is never present on it's own but is a characteristic of septo-optic dysplasia where the patient also has optic disk abnormalities and pituitary deficiencies.
  • Absence of septum pellucidum with porencephalia syndrome: A rare syndrome present at birth and characterized by the absence of the thin membrane in the middle of the brain (septum pellucidum) as well as abnormal cavities in the brain (porencephaly). The syndrome also involves other structural brain abnormalities.
  • Absent corpus callosum -- cataract -- immunodeficiency: A rare syndrome characterized by immunodeficiency, cleft lip or palate, cataract, reduced pigmentation and brain abnormalities.
  • Acanthamoeba infection: Infection with a microscopic, free-living ameba that is readily found in the environment - soil, air and water. Most people exposed to the ameba will not become infected but when infections do occur, they tend to affect the eyes, central nervous system or can cause widespread infection throughout the body.
  • Acanthamoeba infection of the eye: Infection by an amoebic organism called Acanthamoeba. Infection usually occurs when the amoeba enters through a break in the skin or through the nose. Infection can be localized or systemic where it can involve the central nervous system and cause potentially fatal meningoencephalitis. Infection of the eye can occur by cleaning contact lenses in contaminated water.
  • Acanthamoeba keratitis: Infection of the eye with a microscopic, free-living ameba (Acanthamoeba) that is readily found in the environment - soil, air and water. Infection most often occurs through exposure to contaminated water while wearing contact lenses e.g. swimming or showering in infected waters.
  • Acanthocytosis: A rare disorder where most of the red blood cells are abnormal with spiny projections due to lipid abnormalities. The blood abnormality is seen in conditions such as abetalipoproteinemia, severe liver disease and severe malnutrition. Symptoms and prognosis depend on the underlying disorder.
  • Accelerated hypertension: Accelerated hypertension is a condition characterized by a rapid increase in blood pressure. The condition is a medical emergency which can cause organ damage if not treated promptly.
  • Accidental Eye Injury: The accidental injury to an eye
  • Achalasia -- Addisonianism -- Alacrimia syndrome: A rare inherited disorder characterized mainly by achalasia, alacrimia (absent tears) and Addison's disease. Addison's disease involves adrenal insufficiency due to a resistance to adrenocorticotropic hormone. Only about 70 cases reported worldwide.
  • Achalasia -- addisonianism -- alacrima syndrome: A rare inherited disorder characterized mainly by achalasia, alacrimia (absent tears) and Addison's disease. Addison's disease involves adrenal insufficiency due to a resistance to adrenocorticotropic hormone. Only about 70 cases reported worldwide.
  • Achalasia -- adrenal -- alacrima syndrome: A familial disorder characterized by adrenal gland-related hormonal problems, swallowing difficulty (achalasia) and a lack of tears (alacrima). Neurological impairment and motor and sensory neuropathy is progressive. The adrenal glands in patients are resistant to the ACTH hormone and hence fails to operate normally.
  • Achard syndrome: An inherited connective tissue disorder characterized primarily by a short head, long, slender bones, recessed lower jaw and loose hand and foot joints.
  • Achromatopsia 3: A rare form of colorblindness which also involves myopia.
  • Achromatopsia with Myopia: A rare form of colorblindness which also involves myopia.
  • Acromegaloid changes, cutis verticis gyrata and corneal leukoma: A rare disorder characterized by acromegaly (enlarged extremeties) , furrowed skin on scalp and face and corneal leukomas.
  • Acromegaloid, Cutis Verticis Gyrata, Corneal Leukoma Syndrome: A rare condition characterized by the association of acromegaly, cutis verticis gyrate and corneal leukoma.
  • Acromegaly: An abnormal enlargement of the limbs due to increased secretion of growth hormone after the cessation of puberty
  • Acute Angle Closure Glaucoma: Primary angle closure is defined as an occludable drainage angle and features indicating that trabecular obstruction by the peripheral iris has occurred (ie, peripheral anterior synechiae, increased IOP, lens opacities, excessive trabecular pigmentation deposits).
  • Acute Posterior Multifocal Placoid Pigment Epitheliopathy: A acute acquired condition which is an inflammatory one affecting the retina of healthy young adults
  • Acute blindness: An acute loss of vision
  • Acute fulminant multiple sclerosis: Malignant Multiple Sclerosis, is a particularly aggressive form of the disease. Thankfully very rare, this highly aggressive form is defined by its swift and relentless decline to significant disability or even death, often within a few weeks or months after the onset of the initial attack. It is characterized by widespread and progressive cerebral white matter destruction or by severe pathological involvement of clinically strategic regions such as brainstem, resulting in bulbar paralysis.
  • Acute headache: Headache, or cephalgia, is defined as diffuse pain in various parts of the head, with the pain not confined to the area of distribution of a nerve.
  • Acute posterior multifocal placoid pigment: A rare eye disease where the central vision in one or both eyes is affected by inflammation or fluid build up in the retina. The retina lies at the back of the eye. Symptoms such as fever, headache and malaise often precede the eye symptoms. The cause of the condition is unknown but may have autoimmune origins.
  • Acute retinal necrosis syndrome: An acute infection of the eye usually caused by the chicken pox virus (varicella-zoster), herpes simplex or cytomegalovirus. One or both eyes may be involved.
  • Acute tubulointerstitial nephritis and uveitis syndrome: The association of a sudden kidney disorder with eye inflammation. Autoimmune processes are believed to be involved.
  • Acute vitamin A toxicity: Acute ingestion of vitamin A can cause symptoms. Symptoms usually only last for a day or two.
  • Adams Nance syndrome: A rare genetic disorder characterized by rapid heartbeat, high blood pressure, small eyes and the presence of excess glycine in the urine.
  • Adnexal and Skin Appendage Neoplasms: A type of tumour that develops on particular organs - eyes, skin and uterus. The tumors are usually benign but some may become malignant. The symptoms will vary depending on the location of the tumor and whether it is benign or malignant. These type of tumors tend to be most common in middle-aged women.
  • Adolescent cataract and infertility syndrome: A rare syndrome characterized mainly by cataracts and infertility in male adolescents.
  • Adrenal hypertension: Adrenal hypertension is high blood pressure caused by adrenal gland problems. For example, an adrenal tumor can cause excessive production of aldosterone which in turn causes salt-retention and high blood pressure. Severity of symptoms varies depending on the underlying cause.
  • Adrenoleukodystrophy: A rare hereditary metabolic disease that only occurs in male children and is characterized by adrenal atrophy and extensive cerebral demyelination causing progressive loss of mental functioning, aphasia, apraxia and sometimes blindness. The patient usually dies within 5 years.
  • Adrenoleukodystrophy, autosomal, neonatal form: A rare inherited disorder involving the adrenal glands, testes and certain parts of the brain (white matter). It is a less severe form of leukodystrophy where an abnormality within the body cells prevents the metabolism of certain fats (long chain fatty acids).
  • Age-related macular degeneration: Deterioration of the central field of vision.
  • Aging: The medical conditions from getting older.
  • Agnathia-holoprosencephaly-situs inversus: A very rare disorder characterized by a small or absent jaw, developmental brain defect and internal organs situated on the wrong side of the body (situs inversus). The severity and range of symptoms is variable.
  • Aicardi syndrome: A rare genetic disorder where the structure connecting the two halves of the brain fails to develop which results in seizures and eye abnormalities .
  • Air embolism: A condition where an air bubble enters the cardiovascular system (via injection, intravenous therapy, surgery or puncture wound) and obstructs the blood flow.
  • Akaba-Hayasaka syndrome: A very rare syndrome characterized mainly by a prominent forehead, cloudy corneas, low nasal bridge, underdeveloped chest and short limbs.
  • Al Gazali-Khidr-Prem Chandran: A very rare syndrome characterized mainly by short stature, eye problems and an unusual cherubic facial appearance.
  • Al Gazali-Khidr-Prem Chandran syndrome:
  • Albright's hereditary osteodystrophy: A rare genetic disorder where the body fails to recognize and respond to the parathyroid hormone. The parathyroid hormone is involved in controlling the blood levels of calcium and phosphate.
  • Alcohol-induced hypertension: Alcohol-induced hypertension is high blood pressure caused by excessive drinking of alcohol.
  • Alezzandrini syndrome: A rare condition involving degenerative eye disease in one eye, followed by other facial symptoms on the same side and hearing impairment. The condition progresses over months or years.
  • Alpers Syndrome: A rare syndrome characterized by liver disease, seizures and progressive, episodic psychomotor retardation.
  • Alpha-Mannosidosis: A rare condition which is characterized by a lysosomal storage defect.
  • Alport Syndrome: A rare hereditary disorder involving the progressive deterioration of parts of the kidney resulting in chronic kidney disease.
  • Alport syndrome with leukocyte inclusions and macrothrombocytopenia: A rare condition characterized by the presence of large blood platelets, kidney inflammation, deafness and abnormal leukocytes. End-stage kidney disease occurs in about a third of patients and tends to occur during the 3rd and 4th decades of life.
  • Alstrom disease: A rage genetic disorder involving a group of abnormalities affecting vision, hearing, kidney function and also characterized by obesity and diabetes mellitus.
  • Alstrom syndrome: A rare, hereditary genetic disorder which is progressive. Initial symptoms in infants are usually extreme light sensitivity, wobbling of the eyes and sometimes dilated dilated cardiomyopathy and congestive heart failure. Young children quickly gain weight and become obese and as they get older, multiple organ systems may be affected causing blindness, hearing loss, type 2 diabetes, heart failure, liver disease, urological dysfunction, pulmonary fibrosis and renal failure.
  • Alström Syndrome: A progressive condition which is characterized by deafness, obesity and visual problems in childhood that may lead to diabetes and kidney failure in adulthood
  • Alveolar Hydatid Disease: Rare multi-organ tapeworm infection caught from animals.
  • Alves Castelo dos Santos syndrome: A rare syndrome characterized by hair, eye, skin and spinal abnormalities.
  • Amaurosis Congenita of Leber, type 12: A rare inherited retinal disease (retinal dystrophy) that usually starts during the fetal stage. Vision impairment is usually apparent at birth or within months of birth. Type 12 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 1q32.3.
  • Amaurosis Congenita of Leber, type 13: A rare inherited retinal disease (retinal dystrophy) that usually starts during the fetal stage. Vision impairment is obvious usually by the age of 4 years. Type 13 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 14q23.3, RDH12 gene.
  • Amaurosis congenita of Leber: A rare genetic eye disorder characterized by blindness at birth or within years as well as other eye abnormalities.
  • Amaurosis congenita of Leber, type 1: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type I is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 17p13.1, RETGC1 gene.
  • Amaurosis congenita of Leber, type 10: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type 10 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 12, CEP290 gene.
  • Amaurosis congenita of Leber, type 11: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type 11 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 7q, IMPDH1 gene.
  • Amaurosis congenita of Leber, type 2: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type 2 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 1, RPE65 gene.
  • Amaurosis congenita of Leber, type 3: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type 3 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 14q23.3, RDH12 gene.
  • Amaurosis congenita of Leber, type 4: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type 4 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 17p13.1, AIPL1 gene.
  • Amaurosis congenita of Leber, type 5: A rare inherited retinal disease (retinal dystrophy) that starts during the fetal stage. Vision impairment is obvious at birth or within months of birth. Type 5 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 6q11-q16.
  • Amaurosis congenita of Leber, type 6: A rare inherited retinal disease (retinal dystrophy) that usually starts during the fetal stage. Vision impairment is usually apparent at birth or within months of birth. Type 6 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 14q11, RPGRIP1 gene.
  • Amaurosis congenita of Leber, type 7: A rare inherited retinal disease (retinal dystrophy) that usually starts during the fetal stage. Vision impairment is usually apparent at birth or within months of birth. Type 7 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 19q13.3, CRX gene.
  • Amaurosis congenita of Leber, type 8: A rare inherited retinal disease (retinal dystrophy) that usually starts during the fetal stage. Vision impairment is usually apparent at birth or within months of birth. Type 8 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 1q31-q32.1, CRB1 gene.
  • Amaurosis congenita of Leber, type 9: A rare inherited retinal disease (retinal dystrophy) that usually starts during the fetal stage. Vision impairment is usually apparent at birth or within months of birth. Type 9 is distinguished from the other forms of this condition by the genetic origin of the defect - chromosome 1p36, LCA9 gene.
  • Amaurosis fugax: A rare condition where a temporary blockage of blood flow to the retina causes vision loss in the affected eye until the blood flow returns.
  • Amphetamine abuse: Use of the stimulant drugs known as amphetamines or "speed"
  • Amphetamine-induced hypertension: Amphetamine-induced hypertension is high blood pressure caused by use of amphetamines. Patients with an existing history of hypertension may suffer further blood pressure increases while taking amphetamines and this can be serious. Severity of symptoms varies amongst patients depending on their susceptibility, underlying health and duration of amphetamine use.
  • Ampola syndrome: A rare genetic disease characterized primarily by mental retardation, facial anomalies, short stature, seizures and finger and toe abnormalities.
  • Amyloidosis of gingiva and conjunctiva mental retardation: A rare disorder characterized by mental retardation and abnormal amyloid deposits in the gums and conjunctiva of the eye.
  • Amyloidosis, oculoleptomeningeal: Amyloidosis involves the abnormal deposit of a substance called amyloid in various parts of the body. In this particular type, the amyloid deposits in the leptomeningeal blood vessels, brainstem, spinal cord and eye causing central nervous system dysfunction, brain hemorrhages and vision impairment.
  • Andogsky's syndrome: A condition characterized by chronic eczema-like skin lesions which develop during childhood and cataracts which develop in early adulthood. The main areas affected by the skin lesions are the neck, elbows and knees.
  • Anencephaly: A birth defect where large parts of the brain is missing and the brainstem is malformed.
  • Aneurysm, intracranial berry: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms.
  • Aneurysm, intracranial berry, 1: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 1 is caused by a defect on chromosome 7q11.2.
  • Aneurysm, intracranial berry, 2: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 2 is caused by a defect on chromosome 19q13.
  • Aneurysm, intracranial berry, 3: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 3 is caused by a defect on chromosome 1p36.13-p34.3.
  • Aneurysm, intracranial berry, 4: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 4 is caused by a defect on chromosome 5p15.2-14.3.
  • Aneurysm, intracranial berry, 5: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 5 is caused by a defect on chromosome 2p13.
  • Aneurysm, intracranial berry, 6: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are now six different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases an individuals risk for developing intracranial berry aneurysms. Type 6 is caused by a defect on chromosome 9p21.
  • Aneurysm, intracranial berry, 7: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 7 is caused by a defect on chromosome 11q24-q25.
  • Aneurysm, intracranial berry, 8: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 8 is caused by a defect on chromosome 14q23.
  • Angioid streaks: Streaks that radiate out from the optic nerve head under the retina. The streaks may be red, brown or grey. The streaks resemble blood vessels and hence the term angioid. The streaks represent tiny breaks in the elastic membrane of the retina (Bruch's membrane). The anomaly is often associated with conditions such as Paget's disease, sickle cell anemia, Ehlers-Danlos syndrome and pseudoxanthoma elasticum.
  • Aniridia: A genetic disorder where part or all of the iris of one or both eyes is missing. The iris is the colored part of the eye. There are four forms of the disease: AN-1, AN-II, AN-III and AN-IV.
  • Aniridia -- absent patella: A rare genetic condition characterized by an abnormal or missing kneecap as well as the absence of the iris of the eye.
  • Aniridia -- mental retardation syndrome: A very rare syndrome characterized by mental retardation and absent irises.
  • Aniridia -- ptosis -- mental retardation -- obesity, familial: A rare familial disorder characterized by eye abnormalities, mental retardation and obesity.
  • Aniridia I: A genetic disorder where part or all of the iris (except for the stump) of one or both eyes is missing. The iris is the colored part of the eye. There are four forms of the disease: AN-1, AN-II, AN-III and AN-IV.
  • Aniridia II: A genetic disorder where part or all of the iris of one or both eyes is missing. The iris is the colored part of the eye. There are four forms of the disease: AN-1, AN-II, AN-III and AN-IV. AN-II is often associated with other eye problems such as glaucoma and nystagmus.
  • Aniridia III: A genetic disorder where part or all of the iris of one or both eyes is missing. The iris is the colored part of the eye. There are four forms of the disease: AN-1, AN-II, AN-III and AN-IV. AN-III is associated with mental retardation.
  • Aniridia ptosis mental retardation obesity familial type: A rare familial disorder characterized by eye abnormalities, mental retardation and obesity.
  • Aniridia, sporadic: A rare eye malformation where part or all of the iris of the eye is missing at birth.
  • Aniridia, type 2:
  • Anisometropia: This is where there is an inequality in refractive power of the two eyes
  • Anophthalmia -- megalocornea -- cardiopathy -- skeletal anomalies: A rare genetic syndrome characterized by absent or very small eyes, large corneas, congenital heart defects and skeletal abnormalities.
  • Anophthalmia -- short stature -- obesity: A very rare syndrome characterized by absent eyes, short stature and obesity.
  • Anterior polar cataract 2: A rare, dominantly inherited type of cataract which is characterized by small opacities on the front surface of the eye lens. Vision is usually not affected and the cataract is not associated with any other abnormalities. Type 1 is caused by a genetic defect on chromosome 17p13.
  • Anterior segment mesenchymal dysgenesis: An eye disorder caused by a genetic anomaly. The degree of vision impairment various with the severity of the condition.
  • Antithrombin Deficiency: Antithrombin deficiency refers the deficiency or impaired activity of a substance that inactivates enzymes involved in blood coagulation. Antithrombin prevents the blood from clotting too readily and if its activity is impaired then the blood becomes more prone to clotting which can result in severe problems. Severity of the condition can vary amongst patients and the symptoms can vary considerably depending on the location of blood clots and size of the blood clot.
  • Antithrombin Deficiency, type I: Type I Antithrombin deficiency refers the deficiency of a substance that inactivates enzymes involved in blood coagulation. Antithrombin prevents the blood from clotting too readily and if there are insufficient quantities of it then the blood becomes more prone to clotting which can result in severe problems. Severity of the condition can vary amongst patients and the symptoms can vary considerably depending on the location of blood clots and size of the blood clot. Type I may be inherited or acquired through such things as kidney or liver disease. Acquired cases tend to have a lower risk of blood clots compared to inherited cases.
  • Antithrombin Deficiency, type II: Type II Antithrombin deficiency refers the malfunction of a substance that inactivates enzymes involved in blood coagulation. Antithrombin prevents the blood from clotting too readily and if it is unable to function properly then the blood becomes more prone to clotting which can result in severe problems. Severity of the condition can vary amongst patients and the symptoms can vary considerably depending on the location of blood clots and size of the blood clot. Type II is an inherited condition.
  • Anxiety-tension syndrome: Anxiety associated with physical symptoms such as tense muscles and fatigue.
  • Aphakia: Absence of the lens of the eye - often due to cataract treatment. Also called aphacia.
  • Arachnodactyly -- ataxia -- cataract -- aminoaciduria -- mental retardation: A rare syndrome characterized mainly by congenital cataracts, ataxia, mental retardation, abnormal amino acid metabolism and long, thin fingers.
  • Areolar atrophy of the macula: An eye disorder involving degeneration of part of the macula. The impact on vision depends on the location of the lesion rather than the size of the lesion.
  • Arizona Bark Scorpion poisoning: A bite from the Arizona Bark scorpion contains chemicals toxic to the nerve system and can cause serious, life-threatening symptoms.
  • Asiatic porpoise poisoning: The Asiatic porpoise is eaten mainly in China. Eating the liver, internal organs and muscle tissue of the Asiatic porpoise can cause poisoning symptoms in humans if sufficient quantities are consumed. The nature of the toxin is unknown but it is believed that some cases result from very high levels of vitamin A in the liver.
  • Asthenopia: Asthenopia or eye strain refers to general eye symptoms such as vision blurring, eye pain, eye weakness, eye fatigue and headaches which can result from overuse of the eyes or uncorrected vision problems.
  • Astigmatism: A condition which is characterized by ametropia caused by differences in the curvature of the refractive surfaces of the eye
  • Ataxia, Hereditary, Autosomal Dominant: A group of rare, dominantly inherited neuromuscular disorder involving degeneration of the brain and spinal cord. The range, progression and severity of symptoms can vary quite considerably depending on the genetic defect involved.
  • Ataxia, episodic -- vertigo -- tinnitus -- myokymia: A rare genetic disorder characterized by episodes of incoordination and unsteadiness as well as tinnitus and vertigo. Stress, exhaustion, sudden movements and exertion may trigger the episodes. It is caused by a defect on chromosome 1q42.
  • Autoimmune Diseases of the Nervous System: A group of diseases where the body's immune system attacks it's own nervous system. Examples includes opsoclonus myoclonus syndrome, Guillain-Barre syndrome and multiple sclerosis. Symptoms vary depending on which nerves are involved.
  • Autoimmune Lymphoproliferative Syndrome: An inherited autoimmune condition characterized by proliferation of lymphocytes and autoimmunity against the body's own blood cells resulting in premature death of certain blood cells.
  • Autoimmune eye diseases: Eye disease that is caused by an autoimmune disease
  • Autoimmune uveitis: Autoimmune inflammation of the eye's uvea.
  • Autonomic dysreflexia: Autonomic dysreflexia is a condition characterized by instability of the autonomic nervous system and often results in sudden high blood pressure.
  • Autosomal recessive nonsyndromic congenital nuclear cataract: A rare recessively inherited type of congenital cataract that is not associated with any other abnormality.
  • Avitaminosis: A group of diseases caused by the deficiency of one or more vitamins e.g. Beriberi (thiamine deficiency), rickets (Vitamin D deficiency), pellagra (niacin deficiency), pernicious anemia (Vitamin B12), bleeding (vitamin K deficiency) and night blindness (avitaminosis A). Symptoms depend on the type and degree of vitamin deficiency. Lack of various vitamins can affect just about every part of the body including the nervous system.
  • Axenfeld-Rieger syndrome: A rare genetic disorder characterized by underdeveloped or absent teeth and craniofacial and eye abnormalities. The range of symptoms that can occur is somewhat variable.
  • Ayazi syndrome: A very rare syndrome characterized by choroideremia (a degenerative disease of the retina), deafness and obesity.
  • Back tumour: The presence of tumour growth in the vertebra, whether due to primary malignancies e.g. leukaemic or myeloma infiltration of the bone marrow, or due to secondary metastases from another site e.g. lung or breast.
  • Balance symptoms: Problems with balance or vertigo
  • Bardet-Biedl Syndrome: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities.
  • Bardet-Biedl syndrome, type 1: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 1 is caused by a defect in chromosome 11q13.
  • Bardet-Biedl syndrome, type 10: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 10 is caused by a defect in chromosome 12q.
  • Bardet-Biedl syndrome, type 11: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 11 is caused by a defect in chromosome 9q33.1.
  • Bardet-Biedl syndrome, type 12: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 12 is caused by a defect in chromosome 4q27.
  • Bardet-Biedl syndrome, type 2: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 2 is caused by a defect in chromosome 16q21.
  • Bardet-Biedl syndrome, type 3: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 3 is caused by a defect in chromosome 3p12-q13.
  • Bardet-Biedl syndrome, type 4: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 4 is caused by a defect in chromosome 15q22.3.
  • Bardet-Biedl syndrome, type 5: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 5 is caused by a defect in chromosome 2q31.
  • Bardet-Biedl syndrome, type 6: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 6 is caused by a defect in chromosome 20p12.
  • Bardet-Biedl syndrome, type 7: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 7 is caused by a defect in chromosome 4q27.
  • Bardet-Biedl syndrome, type 8: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 8 is caused by a defect in chromosome 14q32.11.
  • Bardet-Biedl syndrome, type 9: A rare genetic disorder characterized by mental retardation, obesity, polydactyly and retinal pigmentation as well as other abnormalities. Type 9 is caused by a defect in chromosome 7p14.
  • Basilar artery insufficiency: refers to a temporary set of symptoms due to decreased blood flow in the posterior circulation of the brain
  • Basilar artery insufficiency syndrome: A range of symptoms caused by impaired blood flow through the basilar artery. The symptoms may come and go according to variation in blood flow through the basilar artery. The blood flow may be impaired by such things as thrombosis, narrowed artery and blood vessel spasms. Symptoms vary depending on the exact location and extent of the artery involvement as well as whether the onset is gradual or sudden.
  • Basilar artery migraine: Basilar migraine (BM), also known as Bickerstaff syndrome, consists of headache accompanied by dizziness, ataxia, tinnitus, decreased hearing, nausea and vomiting, dysarthria, diplopia, loss of balance, bilateral paresthesias or paresis, altered consciousness, syncope, and sometimes loss of consciousness.
  • Bassoe syndrome: A very rare syndrome characterized primarily by hypogonadism, cataracts during infancy and muscle weakness.
  • Batten Disease: Rare childhood genetic degenerative nerve system disease.
  • Behcet's syndrome: Recurring inflammation of small blood vessels affecting various areas.
  • Behr syndrome: A rare inherited neurological condition characterized by spastic paraplegia and sometimes optic atrophy.
  • Bencze syndrome: A rare inherited condition characterized mainly by abnormal, asymmetrical facial bone growth and eye problems in some cases.
  • Benign essential blepharospasm: A neurological disorder where certain eye muscles fail to function properly.
  • Benign mucosal pemphigoid: A rare chronic disease involving blistering and scarring of the mucous membranes especially in the mouth and conjunctiva of the eye.
  • Berk-Tabatznik syndrome: A rare condition characterized by eye and skeletal problems.
  • Besnier-Boeck-Schaumann disease: A rare disease where inflammatory granular nodules form in various organs.
  • Best Vitelliform Macular Dystrophy: Vitelliform macular dystrophy is a rare inherited eye disorder that affects the retina and often results in progressive loss of central vision. The early-onset form of the condition is called Best Vitelliform Macular Dystrophy and usually appears during childhood. The severity of the symptoms of this form of the condition is quite variable. Peripheral and night vision are usually unaffected.
  • Bhaskar-Jagannathan syndrome: A very rare syndrome characterized primarily by long, thin fingers, amino acids in the urine, cataracts (during infancy), incoordination and delayed development.
  • Birdshot chorioretinopathy: A rare eye disorder where the eye has a number of light-colored specks around the optic disk due to an inflammation inside the eye.
  • Birdshot retinochoroidopathy syndrome: Inflammation of the middle layer of the eye called the uvea probably caused by an autoimmune process. The rate of progression and degree of vision impairment is variable.
  • Birth symptoms: Symptoms related to childbirth.
  • Black henbane poisoning: Black henbane is a herb which has hairy stems and bears flowers and fruit. All parts of the plant contain tropane alkaloids which is toxic enough to cause death if eaten. Black henbane is often used for medicinal purposes to treat a variety of health conditions.
  • Blastoma: A type of tumor that originates from precursor cells or blasts (immature or embryonic tissue). The symptoms can vary greatly and are determined by the part of the body that is affected. Blastomas can occur in parts of the body such as the brain, liver, kidneys, nervous system, bones and the retina.
  • Blepharitis: A common eyelid inflammation
  • Blind spot: Loss of vision in a particular area
  • Blindness: Loss of sight in one or both eyes
  • Blindness in both eyes: Inability to see from both eyes.
  • Blindness in one eye: Inability to see from one eye.
  • Blue-ringed octopus poisoning: The blue-ringed octopus is found in shallow Australian ocean water and can deliver venomous, potentially fatal bite. The poison is present in the saliva of the octopus. The venom affects the neuromuscular system.
  • Blurred Vision in Both Eyes: Blurring of vision occurring in both eyes.
  • Blurred Vision in One Eye: Blurring of vision occurring in one eye only.
  • Blurred vision: Blurriness of vision or images.
  • Bobble-head doll syndrome: A rare condition where a child's head bobs up and down continuously due to either fluid on the brain or a large cyst in the third ventricle of the brain.
  • Bonneman-Meinecke-Reich syndrome: A very rare syndrome characterized by calcium deposits in the brain tissue, deficiency of growth hormones and degeneration of the part of the eye called the retina.
  • Bonnemann-Meinecke-Reich syndrome: A rare disorder characterized mainly by growth problems, vision problems and brain disease.
  • Borries syndrome: Localized brain inflammation without the production of pus.
  • Bosma-Henkin-Christiansen syndrome: A rare syndrome characterized mainly by a reduced sense of smell, an underdeveloped nose and hypogonadism.
  • Bothnia retina dystrophy: A genetic eye disease which occurs predominantly in a part of Sweden.
  • Botulism food poisoning: Extremely dangerous food poisoning requiring medical attention, but not always recognized because of its non-abdominal symptoms.
  • Brachycephaly -- deafness -- cataract -- mental retardation: A very rare syndrome characterized mainly by a short head, deafness, cataracts and mental retardation.
  • Brachycephaly -- deafness -- cataract -- microstomia -- mental retardation: A very rare syndrome characterized mainly by a short head, deafness, cataracts and mental retardation.
  • Brachymesomelia-renal syndrome: A rare syndrome characterized by kidney abnormalities and forearm and lower leg deformity. The condition describes a single reported case.
  • Brachymetapody, anodontia, hypotrichosis, albinoidism: A rare syndrome characterized by short foot bones, total absence of teeth, reduced amount of hair and lack of skin pigmentation.
  • Brain Fag syndrome: A type of neurotic disorder that was first observed in white collar workers in Africa.
  • Brain symptoms: Symptoms affecting the brain
  • Brown-McLean syndrome: Swelling around the cornea following cataract removal.
  • Brushfield-Wyatt syndrome: A rare syndrome characterized mainly by mental deficiency, weakness on one side of the body and large port-wine stains that cover about a third of the skin's total surface. This condition may be a variant of another condition called Sturge-Weber syndrome.
  • Bushmaster poisoning: The Bushmaster is a poisonous snake found in America.
  • CAMFAK syndrome: A rare syndrome characterized by cataracts, small head, failure to thrive and spinal curvature.
  • CAR syndrome: A progressive autoimmune eye disease caused by cancer that occurs outside the eye area. It is a type of paraneoplasic cancer which refers to distant neurological effects caused by a cancer. Eye symptoms usually occur before the cancer is detected.
  • CCFDN: A rare, recessively inherited syndrome characterized by cataracts during infancy, unusual facial appearance and neuropathy.
  • CDG syndrome type 1A: A very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 1A involves a phosphomannomutase enzyme defect and affects most body systems especially the nervous system and liver function.
  • Calcification of basal ganglia with or without hypocalcemia: Calcification of a part of the brain called the basal ganglia. That calcification may be associated with conditions such as hypothyroidism, cytomegalovirus, and AIDS or may occur for no apparent reason. The severity of the condition may vary greatly from asymptomatic to neurological, psychiatric and movement disorders. The disorder may also progress at variable rates or remain stable depending on the underlying disease process.
  • Camurati Engelmann disease, type 2: A rare disorder (described in two patients) which has similar symptoms to the genetic condition called Camurati Engelmann disease but the genetic defect responsible for type 1 is not present in type 2. Type 2 has additional bone abnormalities which were noted on radiographs. Patients tend to suffer flare-ups of their condition which is accompanied by severe pain which may leave the patient incapacitated. Flare-ups can be triggered or made worse by stress, exhaustion, exercise, growth spurts, standing too long, walking too long, infection, illness, injury, surgery, cold weather and sudden changes in air pressure.
  • Camurati-Engelmann Disease: A very rare genetic disease thickening of areas of bone causing pain, weakness and wasting. Usually affects the legs during childhood. Also called diaphyseal dysplasia.
  • Canavan disease: Rare genetic degenerative brain disease in infants.
  • Canavan leukodystrophy: A rare inherited disorder where a chemical imbalance in the brain leads to spongy degeneration of the central nervous system which results in progressive mental deterioration and associated symptoms.
  • Cardiomyopathy -- hypogonadism -- metabolic anomalies: A rare syndrome characterized mainly by heart muscle disease, hypogonadism, blindness, deafness and metabolic anomalies. Puberty was normal despite the hypogonadism.
  • Cardiomyopathy cataract hip spine disease: A rare genetic disorder characterized by heart muscle disease, cataracts and hip and spinal problems.
  • Cartilaginous -- arthritic -- ophthalmic -- deafness syndrome: A rare syndrome characterized by the association of eye, joint and cartilage disease as well as deafness.
  • Cat Eye Syndrome: A rare chromosomal disorder involving abnormalities of chromosome 22 and characterized by coloboma of the iris, down-slanting palpebral fissures and anal atresia.
  • Cataract: A condition which is characterized by an opacity of the lens of the eye
  • Cataract -- Hypertrichosis -- Intellectual Deficit: A rare genetic disorder characterized mainly by excessive body hair (especially on the back, shoulders and sides of the face), cataracts and mental retardation.
  • Cataract -- aberrant oral frenula -- growth delay: A rare syndrome characterized by cataracts, growth problems and abnormal mouth tissue (frenulum).
  • Cataract -- ataxia -- deafness: A rare syndrome characterized by cataracts, ataxia and progressive deafness.
  • Cataract -- intellectual deficit -- anal atresia -- urinary defects: A very rare syndrome characterized mainly by cataracts, mental retardation and genitourinary tract abnormalities and absent anal opening.
  • Cataract Hutterite type: An inherited form of cataract that occurs in children and is not associated with any other abnormalities.
  • Cataract and cardiomyopathy: A rare syndrome characterized by the association of congenital cataracts, heart muscle disease, lactic acidosis and skeletal muscle disease. The disorder involves the abnormal storage of lipids and glycogen in the skeletal and heart muscles. The cataracts progress rapidly and require surgery. The severity of the disorder ranges from stillbirth to survival into the fourth decade.
  • Cataract and congenital ichthyosis: A rare syndrome characterized by the presence of cataracts and a dry, scaly skin condition (ichthyosis) at birth or soon after.
  • Cataract congenital dominant non nuclear: A dominantly inherited form of cataract which varied in size, pattern and location of the lens opacities.
  • Cataract dental syndrome: A very rare inherited condition mainly involving eye abnormalities but also various other physical abnormalities. The type and severity of symptoms is variable.
  • Cataract skeletal anomalies: A condition characterized by the association of cataracts and skeletal anomalies. Variable other symptoms may also be present.
  • Cataract, Zonular Pulverulent 1: A genetic form of congenital cataract inherited in an autosomal dominant manner. Diagnosis usually occurs in the first few years of life. Type 1 refers to the fact that this subtype is linked to a defect on chromosome 1q21.1.
  • Cataract, Zonular Pulverulent 3: A genetic form of congenital cataract inherited in an autosomal dominant manner. Diagnosis usually occurs in the first few years of life. Type 3 refers to the fact that this subtype is linked to a defect on chromosome 13q11.
  • Cataract, alopecia, sclerodactyly: A rare disorder characterized by cataracts, lack of hair and skin changes in the hands and feet.
  • Cataract, anterior polar, dominant: A rare, dominantly inherited type of cataract which is characterized by small opacities on the front surface of the eye lens. Vision is usually not affected and the cataract is not associated with any other abnormalities. Type 1 is caused by a genetic defect on chromosome 14q24-qter.
  • Cataract, autosomal recessive congenital 2: A rare, recessively inherited, genetic eye disorder involving congenital cataracts (cloudy eye lens).
  • Cataract, autosomal recessive congenital 3: A rare, recessively inherited, genetic eye disorder involving congenital cataracts (cloudy eye lens). Type 3 is distinguished by the origin of the genetic defect which is linked to the cataracts.
  • Cataract, congenital nuclear, autosomal recessive 1: A rare recessively inherited type of congenital cataract that is not associated with any other abnormality. Type 1 is caused by a mutation on chromosome 19q13.
  • Cataract, congenital nuclear, autosomal recessive 2: A rare recessively inherited type of congenital cataract that is not associated with any other abnormality. Type 2 is caused by a mutation in the beta-B3 crystallin gene on chromosome 22q11.2-q12.2.
  • Cataract, congenital, Volkmann type: A dominantly inherited form of cataract that was observed in a family named Volkmann. Cataract surgery was required in most cases within the first 20 years of life.
  • Cataract, congenital, autosomal dominant: A dominantly inherited form of cataract.
  • Cataract, congenital, cerulean, type 1: A type of cataract that occurs at birth or soon after and has a characteristic blue color with spoke-like opacities radiating from the centre of the lens. Type 1 is caused by a defect on chromosome 17q24.
  • Cataract, congenital, cerulean, type 2: A type of cataract that occurs at birth or soon after and has a characteristic blue color with spoke-like opacities radiating from the centre of the lens. Type 2 is caused by a defect on chromosome 22q11.2-q12.2.
  • Cataract, congenital, cerulean, type 3: A type of cataract that occurs at birth or soon after and has a characteristic blue color with spoke-like opacities radiating from the centre of the lens. Type 3 is caused by a defect on chromosome 2q33-q35.
  • Cataract, congenital, with microcornea or slight microphthalmia: A rare genetic eye disorder characterized by congenital cataracts (cloudy eye lens) and slightly small eyes or small corneas.
  • Cataract, crystalline aculeiform or frosted: An inherited form of congenital cataract characterized by tiny, needle-like crystals in the axial part of the eye lens. It usually affects both eyes and the degree of vision impairment is variable.
  • Cataract, crystalline coralliform: An inherited form of congenital cataract characterized by opacities in the eye lens which resembles sea coral. It usually affects both eyes and the degree of vision impairment is variable.
  • Cataract, juvenile, with microcornea and glucosuria: A rare disorder characterized by the association of juvenile cataracts, small corneas and excessive glucose in the urine.
  • Cataract, microphthalmia and nystagmus: A rare genetic eye disorder characterized by congenital cataracts (cloudy eye lens), small eyes and rapid, involuntary eye movements.
  • Cataract, posterior polar, 1: An inherited form of cataract caused by a defect on chromosome 1pter-p36.1.
  • Cataract, posterior polar, 2: An inherited form of cataract caused by a defect in the CRYAB gene on chromosome 11q.
  • Cataract, total congenital: An inherited form of cataract which is present at birth and involves opacity of the whole lens.
  • Cataract, zonular: A congenital cataract where the lens opacities occur around the nucleus but not within it.
  • Cataract-glaucoma: A rare syndrome characterized by congenital cataracts in both eyes as well as glaucoma which tends to occur between the ages of 10 and 40.
  • Cataract-microcornea syndrome: A rare disorder characterized mainly early onset cataracts, small corneas and myopia.
  • Cataracts: A condition which is characterized by opacities of the lens of the eyes
  • Catastrophic Antiphospholipid Syndrome: A very rare disorder where the blood clotting system becomes dysfunctional and clots too easily due to the abnormal presence of antphospholipid antibodies. It results in blood flow blockages to various body organs. It is possible that the condition has autoimmune origins. The disorder is often triggered by infections, certain drugs (e.g. anticoagulants), minor surgery and hysterectomy.
  • Celiac disease -- epilepsy -- occipital calcifications: A rare syndrome characterized by celiac disease and epilepsy with brain calcifications.
  • Cennamo-Gangemi syndrome: A rare syndrome characterized by small eyes, congenital cataracts and hydrocephalus (buildup of fluid in the brain).
  • Central nervous system lymphoma, primary: A type of lymphoma that occurs in the central nervous system (brain and spinal cord). A lymphoma consists of cancerous lymphocytes which are a type of white blood cell. Symptoms vary according to the location of the lymphoma.
  • Central serous chorioretinopathy: A rare eye disorder where fluid collects under the retina which affects vision. The condition usually resolves itself within 6 months though most people suffering lingering vision disturbances such as distortion, reduced sensitivity to contrast, impaired night vision and reduced color vision.
  • Cerebellar ataxia -- areflexia -- pes cavus -- optic atrophy -- sensorineural hearing loss: A rare syndrome characterized mainly by ataxia, absent reflexes, high foot arch (pes cavus), progressive optic nerve degeneration and hearing impairment. The ataxic symptoms tended to occur early in life after an illness involving fevers. The ataxia then tends to come and go but then persists into adulthood. The severity of symptoms is variable.
  • Cerebellar ataxia, areflexia, pes cavus, optic atrophy and sensorinural hearing loss: A rare syndrome characterized mainly by ataxia, absent reflexes, high foot arch (pes cavus), progressive optic nerve degeneration and hearing impairment. The ataxic symptoms tended to occur early in life after an illness involving fevers. The ataxia then tends to come and go but then persists into adulthood.
  • Cerebellar atrophy with progressive microcephaly: A very rare disorder characterized mainly by a small brain, small head, underdeveloped brain, brain degeneration, contractures, eye problems and seizures.
  • Cerebellar hypoplasia -- tapetoretinal degeneration: A rare disorder character where a part of the brain (cerebellum) is underdeveloped and a nonprogressive eye disorder involving the retinal pigments. The cerebellum is the part of the brain that controls balance and movement.
  • Cerebelloparenchymal autosomal recessive disorder 3: A rare, recessively inherited disorder characterized mainly by albinism, incoordination, low muscle tone and eye problems.
  • Cerebellum agenesis -- hydrocephaly: A rare brain disorder which manifests as reduced muscle tone, ataxia, cataracts and mental retardation.
  • Cerebral Arteriosclerosis: Hardening or blockage of arteries in the brain.
  • Cerebral Atrophy: Wasting away of the brain.
  • Cerebro-oculo-dento-auriculo-skeletal syndrome: A very rare syndrome characterized by abnormalities of the brain, eyes, teeth, ears and skeleton.
  • Cerebro-oculo-nasal syndrome: A rare syndrome characterized mainly by eye, nose and brain malformations.
  • Cerebrovascular symptoms: Symptoms related to the brain's arteries
  • Ceroid lipofuscinosis, neuronal 1, infantile: A rare inherited biochemical disorder involving the progressive accumulation of certain chemicals (lipopigments) in body tissues due to deficiency of an enzyme (palmitoyl-protein thioesterase) needed to process it.
  • Ceroid lipofuscinosis, neuronal 4: A rare inherited biochemical disorder involving the progressive accumulation of certain chemicals (lipopigments) in body tissues due to deficiency of an enzyme (palmitoyl-protein thioesterase 1) needed to process it.
  • Cerulean cataract: A type of cataract that occurs at birth or soon after and has a characteristic blue color with spoke-like opacities radiating from the centre of the lens.
  • Cervenka's syndrome: A rare syndrome characterized by joint and facial abnormalities as well as nearsightedness and degenerative eye problems.
  • Chalazion: Slow-growing swelling of the upper or lower eyelid usually caused by a blockage in the oil glands in the eyelid.
  • Chandler's syndrome: A very rare eye disorder characterized by progressive corneal dystrophy and glaucoma which result in loss of vision.
  • Charcot-Marie-Tooth disease, Type 4B2, with early-onset glaucoma: CMT is an inherited neurological disease characterized by the gradual degeneration of nerves which starts in the hands and feet and results in progressive numbness, muscle weakness and loss of function. This type is characterized by the involvement of glaucoma which starts during childhood.
  • Chemical adverse reaction -- Cesium: Cesium is a chemical used mainly in the photosterilization of foods such as wheat and potatoes and in the manufacture of photoelectric cells. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount (and concentration) of chemical involved and the nature of the exposure.
  • Chemical burn -- eyes: Burns to the eye caused by a chemical. Symptoms vary depending on the type, quantity and strength of the chemical involved as well as the duration of the exposure to the chemical and promptness of treatment measures. Immediate medical attention should be sought if chemical burns to the eyes are suspected.
  • Chemical burns: burns causing protein coagulation
  • Chemical poisoning: Morbid condition caused by chemical.
  • Chemical poisoning -- 1,3-Butadiene: 1,3-Butadiene is a chemical used in crop fungicides, carpet backing, paper coating and foams. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- 1,3-Dinitrobenzene: 1,3-Dinitrobenzene is a chemical used mainly in explosives. The chemical can be readily absorbed through the skin and cause systemic symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- 1-Amino-2-propanol: 1-Amino-2-propanol is a chemical used mainly in the synthesis of various pharmaceuticals such as methadone and opioid. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- 2-Amino-2-methylpropanol: 2-Amino-2-methylpropanol is a chemical used mainly in industrial applications. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- 2-Hexanone: 2-Hexanone is a chemical used mainly in paints, solvents and coated fabrics. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Adiponitrile: Adiponitrile is a chemical used mainly in the production of hexamethylene diamine which in turn is used mainly to produce nylon. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Allyl Glycidyl Ether: Allyl Glycidyl Ether is a chemical used mainly in the production of epoxies, thermoplastics, polyester resins, adhesives and elastomers. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Allyl alcohol: Allyl alcohol is a chemical used mainly as a weed killers and as a material in the production of other chemical compounds. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Allyl chloride: Allyl chloride is a chemical used mainly in the manufacture of epichlorohydrin and glycerin but is also used in the production of products such as polyester, varnish plastic adhesive, insecticides, perfumes and pharmaceuticals. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Amidithion: Amidithion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Amiton: Amiton is a chemical once used as an insecticide and acaricide - it is no longer in use due to its nerve toxicity. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Anti-rust products: Anti-rust products contain various chemicals which are toxic if ingested. The ingested chemicals can continue to cause damage to the organs and gastrointestinal lining for weeks after the ingestion and severe cases can result in death. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Antifreeze: Antifreeze is used in vehicles to prevent freezing or boiling over of the cooling system. The chemicals (methanol, ethylene and propylene glycol) in the antifreeze can cause severe poisoning symptoms if ingested. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Asphalt: Asphalt is the substance used in road surfacing and is also used in electrical adhesive and paints. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Athyl-Gusathion: Athyl-Gusathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Automatic dishwashing detergent: Automatic dishwashing detergents contain chemicals which can cause severe symptoms if ingested. The chemicals in the dishwashing detergent cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Azinfos-methyl: Azinfos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azinfosethyl: Azinfosethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azinophos-methyl: Azinophos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azinphos: Azinphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azinphos-ethyl: Azinphos-ethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azinphos-methyl: Azinphos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azinphosmetile: Azinphosmetile is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Azothoate: Azothoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Benoxafos: Benoxafos is a chemical pesticide used as an acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Bromophos: Bromophos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Bromophos-ethyl: Bromophos-ethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Butylamines: Butylamines are chemicals used in a variety of manufacturing processes such as in the production of pesticides, pharmaceuticals, plastics, dyes, textiles and in leather tanning and photography. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Cadusafos: Cadusafos is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Calcium Oxide: Calcium oxide is a chemical used mainly in sewage treatment, dry cement and in the manufacture of products such as aluminum, glass and steel. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Calcium hypochlorite: Calcium hypochlorite is a chemical used mainly in bleaching products, fungicides, algicides, disinfectants and deodorants. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Captan: Captan is a chemical used as a fungicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical is considered to carry a low risk of poisoning through ingestion.
  • Chemical poisoning -- Carbaryl: Carbaryl is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Carbophenothion: Carbophenothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Chlordane: Chlordane is a poison use to control termites - is banned in the US and many other countries due to its harmful effects. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Chlorfenvinphos: Chlorfenvinphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Chlorine: Chlorine is a chemical used mainly in bleaches, water disinfectants and in pulp mills. Ingestion and other exposures to the chemical can cause various symptoms. Chlorine is very corrosive and extensive damage to body tissues can result. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Chloroacetophenone: Chloroacetophenone is a chemical used mainly in tear gas for riot control purposes. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Chloroform: Chloroform is a chemical used mainly as a refrigerant but also as a solvent in various processing and industrial applications. It's use as an anesthetic is relatively uncommon these days. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Chloromethane: Chloromethane is a chemical used mainly in the production of silicones as well as agricultural chemicals, butyl rubber and other products. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Chloropyrifos: Chloropyrifos is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Chlorpyrifos: Chlorpyrifos is a chemical used mainly in as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be absorbed readily through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Chlorpyrifos methyl: Chlorpyrifos methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Cloth Dyes: Cloth dyes contain chemicals which are considered not toxic but the ingestion of large amounts cay cause symptoms. Some dyes contain corrosive ingredients which can cause severe gastrointestinal damage and even death in severe cases. Most household cloth dyes don't contain corrosive chemicals. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Coumaphos: Coumaphos is used as a pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be absorbed readily through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Cyanthoate: Cyanthoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Cyclohexanone: Cyclohexanone is a chemical used mainly as an industrial solvent, in processes involving oxidative reactions and in the manufacture of certain resins, nylons, insecticides, herbicides, paints, varnish, polishes, degreasers and pharmaceuticals. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Demeton: Demeton-S is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Demeton-O: Demeton-O is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Demeton-O-methyl: Demeton-O-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Demeton-S-methyl: Demeton-S-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Demeton-S-methylsulphon: Demeton-S-methylsulphon is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Demeton-methyl: Demeton-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Deoderant: Deoderants contain various chemicals which can cause serious symptoms if sufficient quantities are ingested. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Depilatories: Depilatories are used to remove hair from parts of the body. They contain various chemicals which can cause serious symptoms if sufficient quantities are ingested. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Dialifos: Dialifos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Diazinon: Diazinon is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Dichlorvos: Dichlorvos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Dicrotophos: Dicrotophos is a toxic insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Diesel oil: Diesel oil is a commonly used fuel. Ingestion is unlikely due to the foul taste and smell. Accidental or purposeful ingestion can result in internal burns and various other symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Dimethoate: Dimethoate is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Dinitrophenol: Dinitrophenol is a chemical that has various applications: herbicide, pesticide, fungicide, acaricide, manufacture of dyes and wood preservative. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Dioxathion: Dioxathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Disulfoton: Disulfoton is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Drain Cleaners: Drain cleaners contain chemicals which can cause severe symptoms if ingested. The chemicals in the drain cleaners cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Drainpipe Cleaners: Drainpipe Cleaners contain chemicals which can cause severe symptoms if ingested. The chemicals in the drainpipe cleaners cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Dye remover: Dye removers can contain chemicals which are corrosive and can cause severe gastrointestinal damage and even death in severe cases. The damage may continue for a few weeks after ingestion so death can occur weeks after the incident. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Endothion: Endothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Ethion: Ethion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Ethoate-methyl: Ethoate-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Ethoprophos: Ethoprophos is a chemical pesticide used as an insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Ethyl-guthion: Azinphos-ethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Ethylamine: Ethylamine is a chemical used mainly in the manufacture of dyes, rayon, rocket propellant, as a fuel additive and in leather-tanning and cellulose treatment. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Ethylene Dichloride: Ethylene Dichloride is a chemical used mainly in fat solvents and as a fumigant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Ethylenediamine: Ethylenediamine is a chemical used mainly as a solvent in the manufacturing process for the production of things such as fungicides, waxes, gasoline additives and pharmaceuticals. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Etrimfos: Etrimfos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Face Powder: Face powder contains various chemicals that can cause symptoms if ingested although this is rare. Eye and inhalation exposure can also cause symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Fenchlorphos: Fenchlorphos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Fenitrothion: Fenitrothion is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Fensulfothion: Fensulfothion is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Fenthion: Fenthion is a chemical pesticide used as an insecticide and avicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Fonophos: Fonophos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Formothion: Formothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Furniture polish: Furniture polish contains chemicals (hydrocarbons) which can cause serious symptoms if ingested. The ingested chemicals can continue to cause damage to the organs and gastrointestinal lining for weeks after the ingestion and severe cases can result in death. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Gasoline: Gasoline is a chemical used as a fuel for combustion engines. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Guthion (ethyl): Guthion (ethyl) is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Hair Bleach: Hair bleach contain chemicals which can cause serious symptoms if ingested. The chemicals in the hair bleach can continue to cause gastrointestinal damage for weeks after ingestion. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Hair Dye: Hair dyes contain chemicals which can cause serious symptoms if ingested. The chemicals in the hair dye can continue to cause damage for weeks after ingestion. Some dyes contain lead or mercury which can cause neurological problems even if low level exposure occurs over an extended period of time. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Helium: Helium is a chemical used mainly in helium balloons, neon signs and diving gas. The gas is sometimes misused as an inhalant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Heptenophos: Heptenophos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Hexachlorocyclopentadiene: Hexachlorocyclopentadiene is a chemical used mainly in the production of chlorinated pesticides, flame retardants, dyes and certain resins. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Hexane: Hexane is a chemical used mainly in the manufacture of products such as glue, paint, shoes and furniture. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Hydrogen Chloride: Hydrogen Chloride is a chemical used mainly in the manufacture of rubber and vinyl chloride . Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Incense: Drinking liquid incense or inhaling incense fumes can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Iodofenphos: Iodofenphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Jet Fuel-4: Jet Fuel-4 is an aviation turbine fuel used by the US military. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Jet Fuel-5: Jet Fuel-5 is an aviation turbine fuel used by the US military. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Jewelry cleaner: Jewelry cleaner contains various chemicals which can cause serious symptoms if ingested or other types of exposure occurs. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Lacquer: Lacquer contains various chemicals which can cause serious symptoms if ingested or other types of exposure occurs. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Lead-containing Paint: Lead pain contains lead as well as other harmful chemicals. The lead in the pain is toxic (especially to young children) and ingesting fresh or old paint can cause serious symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Lighter fluid: Lighter fluid contains various chemicals which can cause serious symptoms if ingested or other types of exposure occurs. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Malathion: Malathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Mecarbam: Mecarbam is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Metal cleaner: Metal cleaner contains various chemicals which can cause severe symptoms if ingested or other forms of exposure occur. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Metal polish: Metal polish contains various chemicals which can cause severe symptoms if ingested or other forms of exposure occur. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Methacrifos: Methacrifos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Methamidophos: Methamidophos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Methane: Methane is a natural gas that can be used as a fuel and also has industrial uses. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Methanol: Methanol is a chemical used mainly in fuel, paint removers, solvent, antifreeze and in the production process of many other products. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Methidathion: Methidathion is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Methiocarb: Methiocarb is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Methomyl: Methomyl is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Methyl Bromide: Methyl Bromide is a chemical used mainly in insecticides, fire extinguishers, wool degreasers and oil extraction. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Methyl Isocyanate: Methyl Isocyanate is a chemical used mainly in herbicides and pesticides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Methyl parathion: Methyl parathion is a chemical used mainly as an insecticide for various crops. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Metiltriazotion: Metiltriazotion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Mevinphos: Mevinphos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Monocrotophos: Monocrotophos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Monosodium Methanarsenate: Monosodium Methanarsenate is a chemical used mainly as a herbicide or pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Morpholine: Morpholine is a chemical used in a variety of applications: rubber industry, corrosion inhibitor, pharmaceuticals, dyes, crop pesticides and as a solvent in various manufacturing processes. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Mould remover: Mould removers contains various chemicals which can cause serious symptoms if swallowed, inhaled or skin and eye exposure occurs. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- N-Methyl-2-Pyrrolidone: N-Methyl-2-Pyrrolidone is a chemical used mainly in paint strippers, wire coating processes, petroleum industry and in the microelectronics industry. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Nitrites: Nitrite is a chemical used in many applications: manufacture of dyes, fabric manufacture, corrosive inhibitors, photography and cyanide antidote kits. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Nitroglycerin: Nitroglycerin is a chemical used mainly in the manufacture of explosives, dynamite, rocket propellant and smokeless powders. The chemical is readily absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Omethoate: Omethoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Oven Cleaners: Oven cleaners contain toxic chemicals which can cause serious symptoms on exposure. Severe gastrointestinal burns can be caused by ingesting oven cleaner. The burns can lead to perforation which involves a high risk of death. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Oxydeprofos: Oxydeprofos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Oxydisulfoton: Oxydisulfoton is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Paraphenylenediamine: Paraphenylenediamine is a chemical used mainly in photographic developing solutions, hair dye, photocopying and printing ink, black rubber, grease, temporary tattoos and car cosmetics. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Parathion: Parathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Parathion Methyl: Parathion Methyl is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Pepper Spray: Pepper Spray is a chemical used mainly in riot control. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Phenkapton: Phenkapton is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Phorate: Phorate is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Phosalone: Phosalone is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Phosdrin: Phosdrin is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Phosmet: Phosmet is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Phosphamidon: Phosphamidon is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Phoxim: Phoxim is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Pirimiphos-methyl: Pirimiphos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Pool Cleaners: Pool Cleaners contain various chemicals (mainly chlorine) which can cause serious symptoms if sufficient quantities are swallowed. The chemicals are very damaging to the mucosal linings in the body. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Primiphos methyl: Primiphos methyl is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Profenofos: Profenofos is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Propoxur: Propoxur is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Prothidathion: Prothidathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Prothoate: Prothoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Pyrimitate: Pyrimitate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Quinalphos: Quinalphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Quinone: Quinone is a chemical used mainly in industrial applications for the manufacture of dyes, chemicals, textiles cosmetics and in the tanning processes. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Quintiofos: Quintiofos is a chemical pesticide used as an acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Sodium Azide: Sodium Azide is a chemical used mainly in nematocides, herbicides, explosives detonators and in vehicle air bags. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Sophamide: Sophamide is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Sulfotep: Sulfotep is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Sulfur Trioxide: Sulfur Trioxide is a chemical used mainly in the production of sulfuric acid and explosives. Sulfur trioxide is also a significant air pollutant which can mix with moisture in the air to produce "acid rain". Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Tar remover: Tar remover contains various chemicals (mainly hydrocarbons) which can cause serious symptoms if sufficient quantities are swallowed. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Terbufos: Terbufos is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Tetraethyl Pyrophosphate: Tetraethyl Pyrophosphate is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Tetrahydrofuran: Tetrahydrofuran is a chemical used mainly as a plastic solvent and in the processing of varnish, ink, paint and glue. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Tetramethylammonium Hydroxide: Tetramethylammonium Hydroxide is a chemical used mainly in the production of a variety of electronic components. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Thiometon: Thiometon is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Titanium: Titanium is an element used mainly in alloys. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Tolclofos methyl: Tolclofos methyl is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Triazophos: Triazophos is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Triazotion: Triazotion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Trifenfos: Trifenfos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Vamidothion: Vamidothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
  • Chemical poisoning -- Window cleaner: Window cleaner contains various chemicals (usually alcohols and ammonia) which can cause serious symptoms if sufficient quantities are ingested. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- acetic acid: Acetic acid is a chemical used for medicinal purposes such as superficial ear infections, jellyfish stings and bladder irrigation. Acetic acid is a also a component of vinegar which is used as a cooking ingredient. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemke-Oliver-Mallek syndrome: A very rare syndrome characterized mainly by eye and finger and toe abnormalities.
  • Chiari-Frommel syndrome: A hormonal disorder where a woman continues to produce milk even after the child has been weaned.
  • Cholestasis -- pigmentary retinopathy -- cleft palate: A rare syndrome characterized by degeneration of retinal pigments, cleft lip, cleft palate, kidney problems and cholestasis (bile flow obstruction).
  • Chondrodysplasia Punctata, Rhizomelic type: A rare genetic disorder characterized by slow growth, mental deficiency, characteristic facial features and skeletal deformities particularly of the limbs, spine and pelvis.
  • Chondrodysplasia punctata: An inherited skeletal abnormality where bone calcifications near joints and other disorders result in growth retardation, short limbs, cataracts and an abnormal nose shape. Also called chondrodystrophia calcificans congenital or congenital stippled epiphyses.
  • Chondrodysplasia punctata, non rhizomelic type: A group of inherited disorder affecting the skeleton, skin, eyes and mental function. The disorders are characterized mainly by stippled epiphyses (abnormal calcification near joints) during infancy. The non-rhizomelic forms tend to be milder, with minimal or no upper limb shortening. The Joints in the ends of the arms and legs tend to be more affected. Some of the specific disorders in this group are Conradi-Hunermann disease, Happle's chondrodysplasia and brachytelephalagnic chondrodysplasia punctata. The range of symptoms and severity may vary between disorders.
  • Chondrodystrophia calcificans congenita: A rare genetic disorder characterized by growth deficiency, short limbs, large skin pores, sparse hair and other abnormalities.
  • Chondrodystrophia punctata, autosomal dominant: A rare genetic disorder characterized by growth deficiency, short limbs, large skin pores, sparse hair and other abnormalities.
  • Chorea, remitting with nystagmus and cataracts: A rare inherited disorder characterized by chorea and involuntary horizontal eye movements that start in infancy and improve or disappear by the age of 10. Cataracts were also present.
  • Chorioretinitis: Inflammation of the choroids and retina of the eye. It can be caused by various pathogens such as bacteria, viruses, fungus or protozoa. Other noninfectious diseases such as sarcoidosis can cause abnormal deposits in the eye which can also result in inflammation.
  • Chorioretinopathy -- microcephaly, autosomal recessive: A rare, recessively inherited disorder characterized by a small head and a degenerative eye condition.
  • Chorioretinopathy dominant form -- microcephaly: A rare inherited disorder characterized by a small head, mental retardation and a degenerative eye condition.
  • Choroid Plexus neoplasms: A rare type of brain tumor that originates in the choroids plexus. The choroids plexus is located inside a space in the brain called the ventricles and produces cerebrospinal fluid. Symptoms are determined by the size, type and exact location of the tumor.
  • Choroidal dystrophy central areolar: An inherited eye disorder.
  • Choroideremia: A rare, inherited, progressive eye disease that causes degeneration of the retina and blindness. The disease usually only affects males.
  • Choroideremia -- hypopituitarism: A rare inherited disorder characterized by eye disease and hypopituitarism.
  • Choroiditis: Inflammation of the part of the eye called the choroid (layer behind the retina). Usually only one eye is affected.
  • Chromosome 1, 1p36 deletion syndrome: A rare chromosomal disorder where deletion of a portion of chromosome 1 causes various abnormalities such as heart problems, mental retardation, developmental delay, facial dysmorphism and short stature. The symptoms are variable depending on the exact location of chromosomal deletion.
  • Chromosome 10, Monosomy 10p:
  • Chromosome 10p deletion syndrome: A rare chromosomal disorder where there is a deletion of the short arm (p) of chromosome 10 resulting in variable abnormalities.
  • Chromosome 11, deletion 11p: A syndrome that is caused by the deletion of short arm (p) of chromosome 11. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
  • Chromosome 12, Isochromosome 12p Mosaic: A very rare disorder genetic disorder involving abnormalities in chromosome 12. The severity of symptoms is variable and tends to include a wide range of defects and abnormalities.
  • Chromosome 12p tetrasomy syndrome: A rare chromosomal disorder where there are four copies of the short arm (p) of chromosome 12 rather than the normal two resulting in various abnormalities.
  • Chromosome 13, Partial Monosomy 13q: A rare chromosomal disorder where the long arm (q) of chromosome 13 is deleted resulting in various physical, neurological and developmental abnormalities. The type and severity of symptoms is determined by the amount and location of the deleted genetic material.
  • Chromosome 13q deletion: A rare chromosomal disorder where the long arm (q) of chromosome 13 is deleted resulting in various physical, neurological and developmental abnormalities. The type and severity of symptoms is determined by the amount and location of the deleted genetic material.
  • Chromosome 13q deletion syndrome: A rare chromosomal disorder where the long arm (q) of chromosome 13 is deleted resulting in various physical, neurological and developmental abnormalities. The type and severity of symptoms is determined by the amount and location of the deleted genetic material.
  • Chromosome 13q partial deletion: A rare chromosomal disorder where part of the long arm (q) of chromosome 13 is deleted resulting in various physical, neurological and developmental abnormalities. The type and severity of symptoms is determined by the amount and location of the deleted genetic material.
  • Chromosome 14q, partial deletion: A rare chromosomal disorder involving deletion of genetic material from the long arm (q) of chromosome 14 resulting in various abnormalities.
  • Chromosome 15q duplication syndrome: A rare chromosomal disorder involving an extra copy of genetic material from the long arm of chromosome 15. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
  • Chromosome 15q, trisomy: A rare chromosomal disorder involving an extra copy of genetic material from the long arm of chromosome 15. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
  • Chromosome 17, deletion 17q23 q24: A rare chromosomal disorder involving deletion of genetic material from the long arm of chromosome 17. The type and severity of symptoms are determined by the amount and location of the lost genetic material.
  • Chromosome 18 deletion syndrome: A rare chromosomal disorder where a portion of chromosome 18 is missing.
  • Chromosome 18, Monosomy 18p: A rare chromosomal disorder where a portion of chromosome 18 is missing which is characterized by mental and growth deficiencies, drooping upper eyelid and prominent ears. The type and severity of symptoms is determined by the amount of genetic material that is missing.
  • Chromosome 18p minus syndrome: A rare genetic disorder where a portion of the genetic material from the short arm of chromosome18 is missing. The symptoms or severity may vary somewhat between patients.
  • Chromosome 18q- Syndrome: A rare chromosomal disorder where a portion of chromosome 18 is missing. The type and severity of symptoms is determined by the amount of genetic material that is missing.
  • Chromosome 1q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 1 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
  • Chromosome 1q21.1 Deletion Syndrome: A rare chromosomal disorder caused by the deletion of a portion of chromosome 1 at a specific location (1q21.1). The main symptoms were mental retardation and various physical anomalies. The manifestations in individuals is quite variable.
  • Chromosome 2, monosomy 2q: A rare chromosomal disorder where part of the long arm (q) of chromosome 2 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
  • Chromosome 2, monosomy 2q24: A genetic disorder characterized by the deletion of a portion of the long arm of chromosome 2.
  • Chromosome 21q, partial deletion: A rare chromosomal disorder where a portion of the long arm of chromosome 21 is deleted.
  • Chromosome 3/B translocation: A rare chromosomal disorder involving a translocation of genetic material of chromosome 3.
  • Chromosome 4 Ring: A rare chromosomal disorder where the ends of chromosome 4 have been deleted and the two broken ends have rejoined to form a ring shape resulting in a range of symptoms determined by the size and location of the genetic deletion.
  • Chromosome 4 ring syndrome: A rare chromosomal disorder where the ends of chromosome 4 have been deleted and the two broken ends have rejoined to form a ring shape resulting in a range of symptoms determined by the size and location of the genetic deletion.
  • Chromosome 6, monosomy 6q: A rare chromosomal disorder where a part of the long arm (q) of chromosome 6 is deleted resulting in various abnormalities depending on the location and length of missing genetic material.
  • Chromosome 6p partial duplication: A rare chromosomal disorder involving duplication of part of the short arm (p) of chromosome 6 resulting in various abnormalities depending on the amount and location of the duplicated genetic material.
  • Chromosome 6q deletion syndrome: A rare chromosomal disorder where a part of the long arm (q) of chromosome 6 is deleted resulting in various abnormalities depending on the location and length of missing genetic material.
  • Chromosome 8 trisomy syndrome: A rare chromosomal disorder where there are three copies of chromosome 8 rather than the normal two which results in various abnormalities.
  • Chromosome 8, trisomy: A rare chromosomal disorder where there are three copies of chromosome 8 rather than the normal two which results in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is duplicated.
  • Chromosome partial trisomy 22q11q13: A rare chromosomal disorder where a portion of chromosome 22 at the location q11-q13 is triplicated instead of resulting in various anomalies.
  • Chronic blindness: A long lasting loss of vision
  • Chronic vitamin A toxicity: Chronic excessive ingestion of vitamin A can cause symptoms.
  • Chylomicron retention disease with Marinesco-Sjogren syndrome: A rare condition characterized by abnormal lipid metabolism, vitamin E deficiency, incoordination and short stature.
  • Citrullinemia: Citrullinemia is an inherited urea cycle disorder which causes toxic substances including ammonia to build up in the blood. There are two main subtypes of Citrullinemia (I and II) which are caused by different genetic abnormalities and result in different symptoms. Milder forms may present in childhood and rare late-onset forms (adult-onset) may not cause symptoms until adulthood.
  • Classic galactosemia: Rare serious genetic defect in galactose metabolism.
  • Classic migraine: Migraine is a neurological disorder that generally involves repeated headaches. Some people also have nausea, vomiting, and other symptoms. Most people with migraines do not have any warning before it occurs. However, some people have a visual disturbance called an aura before the headache starts.
  • Cleft lip -- palate -- mental retardation -- corneal opacity: A very rare syndrome characterized mainly by mental retardation, cleft lip and palate and cloudy corneas.
  • Cleft lower lip cleft lateral canthi chorioretinal: A rare inherited disorder characterized by deafness at birth and corneal dystrophy which impairs vision. Other variable symptoms may be present.
  • Cleft palate -- coloboma -- deafness: A genetic disorder characterized by a combination of features including cleft palate, coloboma and deafness.
  • Closed-angle glaucoma: A severe form of glaucoma needing emergency treatment to avoid blindness.
  • Cloudy cornea as seen in corneal ulcer: A cloudy cornea is a loss of transparency of the cornea.
  • Cloudy vision: Cloudiness of the visual field
  • Cluster headache: Also known as alarm headache, more common in young men, presents with unilateral headache, rhinorrhea and lacrimation
  • Coats Disease: A rare condition where a small group of dilated blood vessels (telangiectasia) form in the retina of one eye and can result in retinal detachment. It is believed to be a more severe form of Leber military aneurysm.
  • Cobra poisoning: The Cobra is a poisonous snake which can be found in Africa, Asia and other parts of the world. Some cobras are able to spit venom into the victims eye and cause serious symptoms.
  • Cocaine-induced hypertension: Cocaine-induced hypertension is high blood pressure caused by use of cocaine. Patients with an existing history of hypertension may suffer further blood pressure increases while taking cocaine and this can be serious. Severity of symptoms varies amongst patients depending on their susceptibility, underlying health and duration of cocaine use.
  • Cochleosaccular degeneration of the inner ear and progressive cataracts: A very rare syndrome characterized by cataracts and progressive damage of certain inner ear structures (cochlea and saccule) which results in progressive deafness and vision problems.
  • Cockayne syndrome: A rare genetic disorder characterized by a senile-like appearance, hearing and vision impairment and sun sensitive skin.
  • Cockayne syndrome type 1: A rare inherited condition characterized by short stature, light sensitivity and a prematurely aged appearance. Type 1 is an early-onset form and involves progressive symptoms that usually start after 1 year of age.
  • Coenzyme Q cytochrome c reductase deficiency of: A rare genetic defect where an enzyme deficiency (CoQ-Cytochrome C reductase) disrupts cellular processes. Any of a variety of the components of the enzyme may be missing or defective and hence the clinical presentation and severity may vary. The deficiency may result in a variety of symptoms and conditions of variable severity such as cardiomyopathy, fatal infant conditions and Leber's myopathy.

Conditions listing medical symptoms: Impaired vision:

The following list of conditions have 'Impaired vision' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

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Conditions listing medical complications: Impaired vision:

The following list of medical conditions have 'Impaired vision' or similar listed as a medical complication in our database.

 

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