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Symptoms » Skin lesion » Glossary
 

Glossary for Skin lesion

Medical terms related to Skin lesion or mentioned in this section include:

  • Abalone poisoning: Abalone are a shellfish that are commonly eaten by humans. The internal organs of the abalone sometimes contain toxins which can cause various symptoms. The toxins are believed to originate from toxic components in the abalones diet.
  • Acanthamoeba: Several conditions from infection with ameba.
  • 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.
  • Ackerman Dermatitis Syndrome: A rare condition characterized by the association of skin and joint symptoms. It is characterized by arthritis preceded by a skin rash (interstitial granulomatous dermatitis) which can vary in appearance from person to person. The condition tends to go through periods of flares and remission.
  • Acne Vulgaris: Another term for the common skin disorder called acne. Acne may occur just about anywhere on the body but is most common on the face, neck and back. The condition may be mild with just a few small spots or severe where large painful cysts develop. Acne generally results from dead skin blocking skin pores which results in infection.
  • Acrodermatitis Enteropathica: A rare, chronic condition that occurs in infants and involves autosomal zinc malabsorption. Signs include blisters on the skin and mucous membranes, alopecia, diarrhea and failure to thrive. The condition may be fatal if untreated.
  • Acute adult T-Cell leukemia: A form of blood cancer affecting the T-cells which make up the body's immune system. The disease is caused by the HTLV-1 virus (human T-cell leukemia virus) which causes the proliferation of abnormal T-cells. The virus can be transmitted sexually and may lay dormant for decades. There are four subtypes: acute, chronic, lymphoma and smoldering. The acute and lymphoma subtypes have the poorest prognosis. The acute subtype tends to progress rapidly and is the most prevalent form of the condition.
  • Acute basophilic leukaemia: A rare type of acute myeloid leukemia characterized by the presence of abnormal basophils.
  • Adult T-Cell leukemia: A form of blood cancer affecting the T-cells which make up the body's immune system. The disease is caused by the HTLV-1 virus (human T-cell leukemia virus) which causes the proliferation of abnormal T-cells. The virus can be transmitted sexually and may lay dormant for decades. There are four subtypes: acute, chronic, lymphoma and smoldering. The acute and lymphoma subtypes have the poorest prognosis.
  • Adult T-Cell lymphoma: A form of blood cancer affecting the T-cells which make up the body's immune system. The disease is caused by the HTLV-1 virus (human T-cell leukemia virus) which causes the proliferation of abnormal T-cells. The virus can be transmitted sexually and may lay dormant for decades. There are four subtypes: acute, chronic, lymphoma and smoldering. The acute and lymphoma subtypes have the poorest prognosis. The lymphoma subtype is aggressive and tends to affect the lymph nodes more than the blood.
  • African milk bush poisoning: The African milk bush originated from African and is a shrubby plant with small flowers. The milky sap contains diterpene esters which can cause symptoms if it is eaten or if the sap comes into contact with the skin or eyes. It can cause severe skin irritation and the high toxicity of the sap can cause death if sufficient quantities are eaten.
  • Aleukemic leukemia cutis: A rare form of leukemia where the skin is involved before the leukemic cells appear in the blood. It is usually an early sign of leukemia.
  • Angiosarcoma: A rare, aggressive malignant tumor of the blood vessel cells. Also called hemangiosarcoma, malignant hemangioendothelioma.
  • Anthrax: A serious infectious bacterial disease that can be fatal.
  • Aquagenous Urticaria: An allergy to water. The condition is extremely rare with sufferers developing hives within 15 minutes of contact with water. Patients may even react to their own sweat and tears on their skin. A special foam may be rubbed regularly into the skin to previde a barrier to water contact and thus allow the person to do things like showering.
  • Argininosuccinase lyase deficiency, neonatal: A rare inherited urea cycle disorder caused by lack of enzymes (argininosuccinase lyase) needed to turn ammonia into urea resulting in excess ammonia in the body. The neonatal form of the condition can result in death or severe complications if not treated early enough.
  • Arthralgia -- purpura -- weakness syndrome: A rare autoimmune disorder characterized mainly by weakness, joint pain, reddish or purplish skin discolorations and a blood abnormality where cryoglobulins in the blood precipitate at low temperatures.
  • Asian Dendorlimus pini caterpillar poisoning: A chronic illness caused by contact with certain a poisonous caterpillar called Dendorlimus pini. Contact with the cocoon can also cause symptoms. These caterpillars can be found in Asia, north Africa and eastern Europe.
  • Asparagus berry overdose: The asparagus plant has bright red berries which can cause skin and gastrointestinal problems which are relatively minor and short-lived. The young shoots of the asparagus plant can also cause problems.
  • Asteatotic eczema: Asteatotic eczema is a chronic skin condition that tends to occur in old age. It usually develops on the lower legs but can occur on other parts of the body as well. Symptoms tend to be worse in dry winter weather.
  • Atrophoderma of Pierini and Pasini: A progressive skin disease characterized by violet or brown skin lesions of varying sizes.
  • Autoimmune Thrombocytopenia: Autoimmune disorder causing a lack of blood platelets.
  • Autoimmune Vasculitis: A inflammation of the blood vessels caused by an autoimmune reaction
  • Autoimmune progesterone dermatitis: A skin rash that appears to be a result of the body's immune reaction to progesterone. As progesterone production is linked to menstrual cycles, the rash occurs usually in the week before menstruation until a few days after menstruation starts.
  • Autosensitization dermatitis: A skin reaction involving the development of a variety of skin lesions in response to infections (virus, bacteria, fungus, parasite), inflammatory skin conditions or other triggers. The skin reaction may vary considerable in appearance from itchy red skin to the development of blisters and may involve variable portions of the body.
  • Baby bottle nipples induced allergies: Baby bottle nipples induced allergies are an adverse reaction by the body's immune system to the latex in Baby bottle nipples . Symptoms usually involve the mouth.
  • Bahemuka Brown syndrome: A very rare syndrome characterized by spastic paraplegia and skin pigmentation irregularities.
  • Baneberry poisoning: Baneberries are toxic and can cause a skin reaction on contact or various poisoning symptoms.
  • Bartonellosis due to Bartonella quintana infection: A disease caused by infection with Bartonella quintana which are transmitted by the body louse. It causes trench fever but may also result in septicemia and endocarditis in patients with a weakened immune system.
  • Basal cell carcinoma: Basal cell carcinoma is a slow-growing form of skin cancer.
  • Basal cell carcinoma, infundibulocystic: A variant form of skin cancer.
  • Behcet's syndrome: Recurring inflammation of small blood vessels affecting various areas.
  • Benign mucosal pemphigoid: A rare chronic disease involving blistering and scarring of the mucous membranes especially in the mouth and conjunctiva of the eye.
  • Blisters: Blistering of the skin.
  • Blue rubber bleb nevus: A very rare congenital vascular disorder characterized by multiple hemangiomas on the skin and internal organs.
  • Bluefarb-Stewart syndrome: A rare disorder where blood vessel defects in a limb causes skin lesions. It most often occurs in one leg. The blood vessel defects involves abnormal connections between arteries and veins.
  • Boudhina-Yedes-Khiari syndrome: A very rare syndrome characterized primarily by short stature, small head, mental deficiency, seizures, hearing loss and skin lesions.
  • Box Jellyfish poisoning: A sting from the Box jellyfish contains a chemical which is toxic to the nerves, heart and skin. This jellyfish is mainly found in the waters of Northern Queensland in Australia. The tentacles should not be removed from the patient as it can cause further injection of poison.
  • Bristleworm poisoning: Bristleworms are a type of marine worm covered in bristles which they can use to sting. The bristles are strong enough to break human skin and cause symptoms.
  • Browntail moth caterpillar poisoning: A hairy, bright-colored caterpillar which can cause skin symptoms on contact with the hair. Inhalation of the hairs can cause respiratory symptoms and eye exposure can also result in symptoms. Patients with pre-existing asthma or atopic allergies may suffer more severe symptoms.
  • Bubble bath allergy: An immune-mediated reaction to exposure to bubble bath solutions. Bubble bath allergy tends to be more common in children and symptoms can vary in nature and severity.
  • Bubonic plague: Severe flea-borne bacterial disease
  • Bullous dystrophy, macular type: A rare condition characterized by loss of scalp hair, increased skin pigmentation, small head, mental retardation, short stature and blisters. The blisters do not form necessarily on skin that has suffered trauma but occurs spontaneously.
  • Bullous pemphigoid: An autoimmune disease characterized by chronic itchy blistering of the skin. Also called pemphigoid.
  • Bullous systemic lupus erythematosus: A blistering disease that can develop in patients with systemic lupus erythematosus (SLE). The process is mediated by autoantibodies.
  • Buruli ulcer: Infection by a bacterium called Mycobacterium ulcerans. The infection is most common in tropical and subtropical climates. The method of transmission is uncertain but the bacteria can enter the skin if it is broken (e.g. a cut) or it may possibly be transmitted by certain African aquatic insects or mosquitoes. The ulcers may become deep enough to affect the bone and can thus result in disability or deformity.
  • Buttercup poisoning: The buttercup plant contains a toxic compound called protoanemonin. The plant is most toxic while it is flowering with the sap being poisonous portion of the plant. Poisoning by eating the plant is unlikely due to the fact that skin contact is quite painful.
  • Callistin shellfish poisoning: The Callistin shellfish (Japanese Callista) is found primarily in Japan. Eating the whole shellfish can cause poisoning symptoms in humans. It is believed that the ovaries contain high levels of choline during spawning season which makes them toxic to humans. The symptoms that manifest are similar to a severe allergic reaction. Avoiding eating the ovaries is the best way to prevent poisoning - cooking does not destroy the toxin.
  • Callosities, hereditary painful: A rare skin inherited condition characterized by the development of painful calluses over pressure points in the hands and feet. Occasionally blisters filled with a foul-smelling liquid form around the calluses.
  • Canary ivy poisoning: Canary ivy is a vine which bears small yellowish-green flowers and black fruit. It is often used indoors and outdoors as an ornamental plant. The berries and leaves contain chemicals such a saponin which can cause severe skin irritation.
  • Candelabra cactus poisoning: The Candelabra cactus is a spiny cactus with a milky sap. The sap contains a chemical called diterpene ester which is mildly toxic if eaten and can cause minor skin irritation upon skin contact.
  • Candidiasis: Fungal infection of moist areas such as mouth or vagina
  • Caper spruge poisoning: The caper spruge is a herb which has a milky sap and bears flowers and fruit. The plant originated in Europe and tends to grow in mountainous areas. The plant sap contains diterpene esters which is mildly toxic if eaten and can cause minor skin irritation if skin contact occurs.
  • Caterpillar complication poisoning: The spines on certain caterpillars can cause a skin reaction as well as systemic symptoms if ingested. The nature of the symptoms vary depending on the species of caterpillar involved. Some only produce skin reactions whereas others can produce systemic symptoms.
  • Cellulitis: inflammation of the subcutaneous fat
  • Cercarial dermatitis: A short-lived rash that occurs as an allergic reaction to larval (cercariae) infection of the skin. These particular parasites use birds and animals as their first hosts. Larval eggs are excreted in the faeces and when they land in water, they hatch into larvae which then infect certain aquatic snails. The infected snails release another form of the larvae called cercariae which then search for a bird, mammal host. When they enter the skin of a human they die as humans are unsuitable hosts but the skin can produce an allergic reaction.
  • Chemical allergy: A chemical allergy refers to an adverse reaction by the body's immune system to a chemical. The specific symptoms that can result can vary amongst patients depending on the type and duration of the exposure and individual response.
  • Chemical burn -- skin: Burns to the skin 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.
  • Chemical burns: burns causing protein coagulation
  • Chemical poisoning -- 1,2-Dibromoethane: 1,2-Dibromoethane is a chemical used in gasoline, soil fumigants, fire extinguishers, flue gases and mechanical gauge fluid. Excessive exposure to this chemical can cause serious symptoms. Some people can suffer an adverse reaction to the chemical. 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 -- Acrylonitrile: Acrylonitrile is a chemical used mainly in the production of acrylic and modacrylic fibers but also in the production of certain plastics, nylon dyes, drugs 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 -- 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 -- Ammonia: Ammonia is a chemical used mainly in household cleaning products and bleach. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Ammonium Bifluoride: Ammonium Bifluoride is a chemical used wheel cleaners, herbicides and in the manufacture of magnesium. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
  • Chemical poisoning -- Benzene: Benzene is a chemical used mainly in gasoline fuel and as an industrial solvent. 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 -- Captafol: Captafol is a chemical used mainly 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.
  • Chemical poisoning -- Chlorinated naphthalene: Chlorinated naphthalene is a chemical used in a wide range of applications: plasticizers, rubber industries, manufacture of electrical equipment and the petroleum industry. 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 -- Epichlorohydrin: Epichlorohydrin is a chemical used for a variety of applications - epoxy production, insecticides, solvent and agricultural chemical. 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 -- Formaldehyde: Formaldehyde is a chemical used mainly in blues, lacquers, fireproofing, electrical insulation, leather tanning products and embalming. 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 -- Hexachlorobutadiene: Hexachlorobutadiene is a chemical used mainly in fumigants and as a solvent in the manufacture of products such as lubricants and rubber. 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 -- Hydrogen Fluoride: Hydrogen Fluoride is a chemical used mainly in car cleaning products and in the production of integrated circuits. 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 -- Lewisite: Lewisite is a very poisonous gas which has the potential to be used in chemical warfare due to its deadly effects. 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 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 -- 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 -- Palladium: Palladium is a chemical which is very widely used in manufactured goods: jewelry, electronics, dentistry, medicine, groundwater treatment and fuel cells . Palladium carries a high risk of sensitization. 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 -- Pentachlorophenol: Pentachlorophenol is a chemical used mainly in fungicides, herbicides, insecticides, molluscicides, algicides and bactericides. It is commonly used as a 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 -- Platinum: Platinum is a metal used mainly in jewelry, electrical contacts, dentistry, laboratory equipment and vehicle emission control devices. 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 -- Rhodium: Rhodium is metallic element used mainly in platinum and palladium alloys and vehicle catalytic converters. It is also used in jewelry, high quality pens, and as a catalyst in various industrial 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 -- Selenium Dioxide: Selenium Dioxide is a chemical used mainly in gun bluing solutions. 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 -- 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 -- Sodium Hypochlorite: Sodium Hypochlorite is a chemical used mainly in disinfectants, bleach, deodorizers and as a water purifier. 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 -- 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 -- 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 -- Thioglycolic Acid: Thioglycolic Acid is a chemical used mainly in leather processing and in the production of hair straightening solutions, hair removal products, polyvinyl chloride, pharmaceuticals, agrochemicals and in metal detection reactions. 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 -- Vinyl Acetate: Vinyl Acetate is a chemical used in the manufacturing process of a wide range of products such as adhesives, paints, textiles, wood glue and vehicle glass . 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.
  • Chickenpox: Common viral infection.
  • Chirodropidae poisoning: Chirodropidae are jellyfish-like marine organisms found mainly in the Indian and Pacific Oceans. They can deliver a painful sting which can be life-threatening in some cases. The box jellyfish, Irukundji jellyfish and some sea wasps are all members of this class.
  • Chronic adult T-Cell leukemia: A form of blood cancer affecting the T-cells which make up the body's immune system. The disease is caused by the HTLV-1 virus (human T-cell leukemia virus) which causes the proliferation of abnormal T-cells. The virus can be transmitted sexually and may lay dormant for decades. There are four subtypes: acute, chronic, lymphoma and smoldering. The acute and lymphoma subtypes have the poorest prognosis. The acute form tends to progress relatively slowly and generally responds better to treatment than the other subtypes.
  • Chronic leukemia: Leukemia in which the cell line is well differentiated, usually B lymphocytes.
  • Churee poisoning: The Churee plant is a succulent, cactus-like, spiny plant which also bears relatively large leaves. The sap of the plant contains a chemical (diterpene ester) which can cause skin and eye irritation on exposure or gastrointestinal symptoms if eaten. The plant is considered to have a relatively low level of toxicity.
  • Cocky Apple stinging caterpillar poisoning: Contact with the poisonous hairs or spines of the Cocky Apple stinging caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Common Woolly Bear moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Common Woolly Bear moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Condoms and diaphragms induced allergies: Condoms and diaphragms induced allergies are an adverse reaction by the body's immune system to the latex in condoms and diaphragms.
  • Congenital herpes simplex: An infant born with a herpes simplex infection transmitted through the mother. The infection may be localized or involve various internal organs and even the central nervous system in which case death can occur.
  • Congenital vaccinia: Congenital vaccinia is where the fetus becomes infected with vaccinia. This can occur when vaccination is administered during pregnancy - vaccination during the third trimester appears to be the most likely to result in fetal infection. The newborn is born with severe skin lesions and death generally occurs before or soon after birth.
  • Connective tissue disorders: Any condition affecting connective tissues.
  • Contact dermatitis: Skin reaction to an irritant
  • Creeping disease: A skin disease caused by a parasite which tunnels its way through the skin leaving a visible red, itchy, linear eruption on the skin where it has been. The hookworm parasite can't use humans to complete its life cycle but continues to travel through the skin until it dies. Transmission usually occurs through skin contact with warm, moist soil contaminated by the feces of an infected animal.
  • Cryptococcosis: A fungal infection caused by Cryptococcus neoformans which primarily affects the central nervous system and the lungs. People with weakened immune systems such as AIDS sufferers are generally more susceptible to this type of infection.
  • Cutaneous Anthrax: A skin infection caused by the spores of the anthrax bacteria called Bacillus anthracis. The infection occurs when the spores enter broken skin and result in a small red bump which blisters. The blister ruptures and forms a dark scab over dead tissue.
  • Cutaneous Candidiasis: A condition which is characterized by a candida infection which occurs on the cutaneous surface
  • Cutaneous diphtheria: Skin infection from Diphtheria
  • Cutaneous leishmaniasis: A rare infectious disease caused by any of a number of parasitic Leishmania species which is transmitted through the bite of an infected sandfly. Infection can cause any of three different manifestations: cutaneous leishmaniasis, mucosal leishmaniasis and visceral leishmaniasis. Cutaneous leishmaniasis tends to be limited to skin lesions that can take weeks or years to heal, often leaving a scar.
  • Cutaneous mastocytosis: Skin mastocytosis
  • Cutaneous necrotizing vasculitis: Inflammation and damage of the blood vessel walls that also affects the skin. The condition may occur on its own or as a result of an underlying condition.
  • Cutaneous vascularitis: Inflammation of blood vessels in the skin which can have any of a variety of causes such as infections or drugs.
  • Darier disease: A slowly progressing inherited skin disorder characterized by small brownish warty bumps and nail abnormalities. The skin disorder because the skin cells are not held together properly.
  • Decubitus ulcers: An ulceration due to an arterial occlusion or prolonged pressure
  • Dendrolimiasis: A chronic illness caused by contact with certain poisonous caterpillar spines or urticating hairs.
  • Dermal melanoma: The term "primary dermal melanoma" has been used to describe a solitary melanoma lesion confined to the dermal and/or subcutaneous tissue in primary unknown melanoma cases. There are no significant histopathological differences between primary dermal melanoma and cutaneous metastasis of melanoma. The most important distinction to be made is with metastatic melanoma, because the prognoses for stage IV melanoma and primary dermal melanoma are vastly different.
  • Dermatitis: Inflammation of the skin.
  • Dermatitis herpetiformis: A condition which is characterized by a chronic pruritic dermatitis
  • Dermatitis herpetiformis related allergy: Dermatitis herpetiformis related allergy refers to the body's immune system response to gluten. IgA antibodies drive the allergic response to gluten exposure and manifests as a distinctive skin rash. The rash usually affects the knees, elbows, back, scalp and buttocks and can come and go sporadically.
  • Dermatophilosis: A form of bacterial skin infection caused by Dermatophilus congolensis. Infection usually occurs in animals such as cattle and sheep but can cause skin lesions in humans.
  • Dermatostomatitis, Stevens Johnson type: A rare but serious condition involving inflammation and blistering of the skin and mucous membranes. It is believed to be an allergic reaction that can occur in response to some drugs or infectious diseases.
  • Dialyzer hypersensitivity syndrome: An anaphylactic reaction that occurs in some patients who are dialyzed on artificial kidneys. A compound (ethylene oxide) used to dry sterilize artificial kidneys is a likely allergen.
  • Diphtheria: Infectious bacterial respiratory disease
  • Dipylidium: The dog tapeworm
  • Dipylidium caninum infection: A tapeworm (Dipylidium caninum) infection. Transmission can occur when infected animal fleas are accidentally ingested.
  • Drug Allergies: Allergies to medications or other drugs.
  • Drug-Induced Pemphigus: Pemphigus is an autoimmune skin blistering disease which affects mainly the skin - mucous membranes are rarely affected. Drug-induced pemphigus is an autoimmune response to a drug.
  • Duhring disease: A rare chronic skin disorder involving rashes of small skin bumps and blisters that are extremely itchy.
  • Duhring-Brocq disease: A very itchy skin rash consisting of red bumps and blisters which is often associated with intestinal sensitivity to gluten that is consumed.
  • Dyskeratosis congenita of Zinsser-Cole-Engman: An inherited condition characterized by recurring painful mouth ulcers, skin pigmentation and nail abnormalities.
  • Ectodermal dysplasia/ skin fragility syndrome: An extremely rare syndrome characterized by fragile skin which blisters and peels, abnormal nails and thickened skin on palms and soles. Skin blistering and peeling starts at birth.
  • Eczema: Skin rash usually from allergic causes.
  • Eczema vaccinatum: A rare condition where a person who has eczema and is exposed to vaccinia through vaccination. The condition can occur even if the inoculation doesn't occur directly onto eczematous skin. The virus can also be transferred to an eczema sufferer from a recently vaccinated person. Severe untreated cases can result in death.
  • Electrical burns: Burns caused when an electric current pass through the body or part of it. The symptoms and severity of the burn depends on the strength of the electrical current, the duration of the exposure and the part of the body involved. Prompt treatment in more severe cases can improve the prognosis.
  • Electrocution: Any injury caused by electricity
  • Epidermalolysis bullosa: A group of skin disorders characterized by fragile skin which can blister upon little or no trauma to the skin. There are a number of different subtypes with some being inherited and some acquired. The hands and feet are often the main parts of the body affected.
  • Epidermolysa bullosa simplex and limb girdle muscular dystrophy: A rare syndrome involving fragile skin that blisters easily as well as muscle weakness and wasting in the head and limbs. The severity of the blistering and muscle weakness is variable with some sufferers dying during infancy.
  • Epidermolysis Bullosa Dystrophica, Autosomal Dominant: A rare inherited skin blistering disorder characterized by the development of blisters on the skin and mucous membranes even with minor skin trauma. The blistered areas become scarred. The condition is caused by a defect in the collagen gene. The skin sensitivity may improve with age.
  • Epidermolysis Bullosa Dystrophica, Pretibial: A rare inherited skin blistering disorder characterized by the development of blisters on the skin and mucous membranes even with minor skin trauma. The skin condition also involves itching which usually doesn't respond to conventional therapies. The blistered areas become scarred. The condition is caused by a defect in the collagen gene. The skin sensitivity may improve with age.
  • Epidermolysis Bullosa Pruriginosa: A rare inherited skin blistering disorder characterized by the development of skin blistering and scarring mainly on the shins. The condition is caused by a defect in the collagen gene. The skin sensitivity may improve with age.
  • Epidermolysis bullosa: A group of rare inherited skin diseases characterized by fragile skin which forms blisters with even minor injuries. The blisters can be painful and can occur anywhere on the skin and even inside the digestive tract.
  • Epidermolysis bullosa acquisita: An acquired autoimmune skin condition characterized by blisters which cause scarring on the skin of joints and sometimes the skull.
  • Epidermolysis bullosa dystrophica, Bart type: A rare inherited skin blistering disorder characterized by the development of blisters on the skin and mucous membranes as well as areas of missing skin at birth. Nail abnormalities are also present.
  • Epidermolysis bullosa dystrophica, dominant type: A relatively mild form of the skin disease characterized by fragile, blistered skin.
  • Epidermolysis bullosa intraepidermic: A rare inherited skin disorder characterized by separation of the layers within the skin which results in fragile, blistered skin. The blisters usually heal without scarring and the skin that is most often placed under trauma (feet and hands) is the most affected.
  • Epidermolysis bullosa inversa dystrophica: A rare genetic syndrome characterized by fragile skin which blisters easily. The corneas, vulval and anal areas are involved as well as the trunk, neck, thighs and legs.
  • Epidermolysis bullosa simplex with mottled pigmentation: A variant of a skin blistering disease which also involved a skin pigmentation anomaly.
  • Epidermolysis bullosa simplex, Cockayne-Touraine type: A form of skin disease where fragile skin blisters if it suffers some sort of physical trauma. The blisters do not cause scarring and are exacerbated by warm weather.
  • Epidermolysis bullosa simplex, Koebner type: A rare genetic skin blistering disorder where fragile skin blisters upon minor trauma. The blistering is widespread and can cause severe scarring which can affect growth.
  • Epidermolysis bullosa simplex, Ogna type: An inherited skin blistering condition characterized by blisters on palms and soles.
  • Epidermolysis bullosa with pyloric atresia: A rare inherited blistering skin disorder which also involves a defect where the digestive system is closed off in the pyloric area. Death generally occurs even if the defect is corrected.
  • Epidermolysis bullosa, acquired:
  • Epidermolysis bullosa, dermolytic: A rare genetic syndrome characterized by fragile skin which blisters easily due to defective skin collagen. The mucosal lining of the mouth and even intestines may be effected in severe cases.
  • Epidermolysis bullosa, generalized atrophic benign: A rare inherited skin disorder characterized by fragile skin which blisters easily and often results in scars after healing. The condition is generally quite mild compared to other skin disorders involving fragile blistering skin.
  • Epidermolysis bullosa, junctional: A rare inherited skin disease which is characterized by fragile skin which readily forms skin blisters and can result in fatal complications.
  • Epidermolysis bullosa, junctional, Herlitz-Pearson: A rare blistering skin disease which can often result in infant death
  • Epidermolysis bullosa, junctional, with pyloric atrophy: A rare inherited skin disease which is characterized by fragile skin which readily forms skin blisters as well as obstruction of the passage from the stomach to the intestine (pylorus). Death usually occurs within weeks of birth.
  • Epidermolysis bullosa, simplex: A group of skin disorders characterized by fragile skin which can blister upon little or no trauma to the skin. There are a number of different subtypes with some being inherited and some acquired. The hands and feet are often the main parts of the body affected.
  • Epidermolytic Hyperkeratosis: A rare inherited skin disorder characterized by blistering, redness, scaling and ultimately thickening of the skin that occurs from birth. The severity of the condition is variable.
  • Epidermolytic epidermolysis bullosa: A group of skin disorders characterized by fragile skin which can blister upon little or no trauma to the skin. There are a number of different subtypes with some being inherited and some acquired. The hands and feet are often the main parts of the body affected.
  • Erysipelas: An infectious skin disease with symptoms such as redness, swelling, fever, large blisters and pain.
  • Erythema: Skin redness caused by congestion of capillaries such as in blushing.
  • Erythema multiforme: An allergic inflammatory skin disorder which has a variety of causes and results in skin and mucous membrane lesions that affect mainly the hands, forearms, feet, mouth nose and genitals.
  • Erythema multiforme as in case of herpes simplex infection: is a skin condition of unknown etiology, possibly mediated by deposition of immune complex (mostly IgM) in the superficial microvasculature of the skin and oral mucous membrane that usually follows an antecedent infection or drug exposure. It is a common disorder, with peak incidence in the second and third decades of life.
  • Erythrokeratodermia ataxia: A rare inherited condition characterized by skin and nervous system disorders
  • Ethylenediamine dihydrochloride mix allergy: A Ethylenediamine dihydrochloride allergy refers to an adverse reaction by the body's immune system to Ethylenediamine dihydrochloride which is often found in medicinal preparations such as skin creams and nose drops. It also has various industrial uses. Exposure is usually through skin contact and hence results mainly in skin symptoms. Exposure can occur in an occupational setting especially where the chemical is used in industrial applications.
  • Excoriations: Abrasion or scratch on the skin; see also skin lesion
  • Exfoliative dermatitis: Form of dermatitis where skin flakes or falls off.
  • Fabry disease: Genetic fat storage disorder
  • Face symptoms: Symptoms affecting the face
  • Familial Eosinophilic Cellulitis: A relatively uncommon, recurring skin condition which is inherited and characterized by flame-shaped, raised, red skin lesions. The skin lesions usually blister and change color and resolve after a few weeks. One or more skin lesions may be present.
  • Febrile Ulceronecrotic Mucha-Habermann disease: A very rare skin disease characterized by bleeding skin ulcers and fever. There is no obvious cause of the condition. The skin ulcers spread and can cover most of the body. Sepsis and death is more likely in adults.
  • Fingerprints absence -- congenital milia: A very rare syndrome characterized mainly by the absence of fingerprints, webbed toes and milia.
  • Fingerprints absence -- syndactyly -- milia: A very rare syndrome characterized mainly by the absence of fingerprints, webbed toes and milia.
  • Fire Coral poisoning: The Fire Coral is a type of jellyfish with a seaweed-like appearance, found in warmer oceans around the world. The fire coral has stinging cells which can deliver a sting to humans. The fire coral has a hard skeletal portion which can also deliver cuts to the skin if it is brushed up against.
  • Fire coral larvae envenomation: The tiny stinging larvae of fire coral can release a toxin if they are put under pressure. Thus, any larvae trapped under swimming bathers or caps can cause toxins to be released. The skin develops an allergic response to the toxin and a rash forms. Swimming clothes contaminated by the stinging cells can produce a reaction even weeks after they have been washed and dried as the toxins are still able to be released from trapped stinging cells. Rubbing, showering in fresh water and wearing contaminated bathing suits for a long time after getting out of the water tend make the rash worse. Symptoms other than those involving the skin may occur occasionally. The condition most often occurs in places such as Japan and Eastern Russia.
  • Flea-borne diseases: Diseases that are carried by fleas
  • Flowering spurge poisoning: The flowering spurge is a slender plant which bears little white flowers. The plant is sometimes used for medicinal purposes by native Americans to treat conditions such as skin infections and gonorrhea but the milky sap of the plant contains diterpene esters which can cause unwanted symptoms. The plant is considered to have a relatively low level of toxicity if eaten and can also cause skin irritation on exposure.
  • Fluke infections: An infection caused by flukes
  • Food Additive Adverse reaction -- chocolate: An intolerance to chocolate is an adverse reaction (not an immune response) by the body to chocolate. The adverse reaction results from the body's inability to metabolize the food. The amount of chocolate required to trigger the onset of symptoms and the nature and severity of symptoms may vary considerably between patients.
  • Food Additive Adverse reaction -- sulphite: An intolerance to sulphite is an adverse reaction (not an immune response) by the body to sulphite. The adverse reaction results from the body's inability to metabolize the substance. The amount of sulphite required to trigger the onset of symptoms and the nature and severity of symptoms may vary considerably between patients.
  • Fresh Mangrove caterpillar poisoning: Contact with the poisonous hairs or spines of the Fresh Mangrove caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Frostbite: damage to skin, soft tissues and blood vessels due to extreme cold
  • Functioning pancreatic endocrine tumor: Tumors that develop in the pancreas and cause excessive secretion of one or more pancreatic hormones such as insulin, somatostatin, glucagons, gastrin, ACTH (corticosteroids) and vasoactive intestinal peptidase.
  • Gas gangrene: Infection of deep tissues with anaerobic bacteria due to introduction of bacteria through a penetrating injury such as a battlefield or surgical wound; the bacterial kill the surrounding tissues and release gas within the tissues.
  • Generalized pustular psoriasis: This is a rare form of psoriasis is also known as von Zumbusch psoriasis. It can be life-threatening especially in the elderly. It is characterized by the development of pustules in the flexural areas - the backs of the knees, the insides of the elbows, the armpits and the groin. These pustules continue to spread and soon they join to form lakes of pus. The pustules rupture easily and can become infected. This condition can be fatal if the patient gets dehydrated, or the infection spreads to the bloodstream. Generalized pustular psoriasis is often triggered by stopping topical or oral steroids.
  • Genital herpes: Sexually transmitted infection of the genital region.
  • Gestational pemphigoid: A rare autoimmune skin blistering disorder that occurs during pregnancy onset during second trimester with severe form recurring after delivery during menstruation.
  • Giant silkworm poisoning: A pale, yellow-green caterpillar with red legs which has poisonous green spines on parts of its back. It is commonly found in North America.
  • Glanders: An infectious disease caused by a bacterium (Burkholderia mallei). It is usually a disease that affects horses and mules but can also infect other animals and humans. Human infection usually occurs in laboratory settings or in those with prolonged contact with infected animals. Symptoms are determined by whether infection occurs through the skin or via the lungs or blood stream. Bloodstream infections are the most severe and usually result in death within weeks.
  • Glucagonoma syndrome: A rare condition characterized by a tumor which secretes glucagon and a characteristic spreading rash, diabetes mellitus and various other symptoms.
  • Granuloma inguinale: Granulomous disease spread sexually.
  • Grapeleaf skeletonizer caterpillar poisoning: Contact with the poisonous hairs or spines of the grapeleaf skeletonizer caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Grass spider poisoning: The grass spider is a type of funnel web spider native the western parts of the US.
  • Grover's disease: A rare skin condition characterized by small, raised, red lesions and blisters that occur only temporarily.
  • Gypsy moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Gypsy moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • HIV related skin conditions: Skin conditions which occur in case of HIV due to decreased body immunity.
  • HIV/AIDS: HIV is a sexually transmitted virus and AIDS is the progressive immune failure that HIV causes.
  • Hailey-Hailey disease: A rare autoimmune skin disorder characterized by clusters of small blisters that erupt in high friction areas such as the armpits and groin and neck. Hot, humid weather, skin infections and UV radiation often trigger the condition.
  • Hand-Foot-Mouth Syndrome: An infectious viral disease caused by the coxsackievirus A. The disease is characterized by the development of blisters in the mouth and on hands and feet. The disease is spread by contact with body fluids from an infected person and the incubation period is 3 - 7 days. The infection is most common in children under the age of ten but can occur in teenagers and sometimes in adults.
  • Hand-Schuller-Christian Syndrome: A group of blood disorder involving excess production of histiocytes (type of immune cell) throughout the body. Accumulation of histiocytes results in non-cancerous growths which can damage organs and other body tissues such as bones. Symptom vary hugely and depend on location and size of tumor growths.
  • Handgrips induced allergies: Handgrips induced allergies are an adverse reaction by the body's immune system to the latex in handgrips. Symptoms usually involve the hands.
  • Head symptoms: Symptoms affecting the head or brain
  • Heliotrope poisoning: The Heliotrope is a herbaceous plant which bears small white, purple or blue flowers. The plant can be found growing in the wild and is also used indoors and outdoors as an ornamental plant. The leaves contain chemicals which can cause symptoms if eaten or skin irritation upon skin exposure. The plant is considered to have a low level of toxicity and large amounts would have to be eaten to cause symptoms. The leaves are sometimes used to make a tea.
  • Helminth infections: The infection by a parasitic worm
  • Herbal Agent adverse reaction -- Clove: Clove can be used as a herbal agent that can be used topically for tooth pain or as a local anesthetic in dentistry. The herbal agent can cause an adverse reaction or even anaphylaxis in some people.
  • Herbal Agent adverse reaction -- Ginkgo biloba: Ginkgo biloba can be used as a herbal agent to treat conditions such as tinnitus, brain trauma, vertigo, blood vessel diseases and any other problems which benefit from the blood vessel dilating action of the herbal agent. Ginkgo biloba can cause adverse reactions in some people.
  • Herbal Agent adverse reaction -- Nettles: The root extracts from nettle plants can be used as a herbal agent to treat rheumatic disorders and urinary problems related to enlarged prostate. The root extract can cause an adverse reaction in some people.
  • Herbal Agent adverse reaction -- Passion Flower: Passion Flower can be used as a herbal agent to treat insomnia, nerve painand anxiety. The herbal agent contains various chemicals which can cause an adverse reaction in some people.
  • Herbal Agent overdose -- Chaste Tree: Chaste tree can be used as a herbal agent to treat menstrual problems and breast pain. The herbal agent can cause an adverse reaction in some patients. It is important to note that this herb may inhibit the effect of the birth control pill.
  • Herpes, Neonatal: Neonatal herpes is the infection of a newborn with the herpes virus within the first six weeks of life. The virus may be transmitted from the mother to the baby while it is still in the uterus or during delivery. The risk of transmitting the virus is highest if genital herpes is contracted during the late stages of the pregnancy. A mother with long standing or recurring herpes infection usually has sufficient antibodies to the virus to prevent the infant becoming infected. Neonatal herpes can also be contracted when an infant comes into contact with an infected person e.g. being kissed by and adult with cold sores. A cesarean birth may be advised for mothers who have active genital lesions.
  • Herpes, Neonatal -- Mucocutaneous and Ocular Infection: Mucocutaneous herpes infection in neonates is a herpes infection of the mucous membranes within the first six weeks of life. The virus may be transmitted from the mother to the baby while it is still in the uterus or during delivery. The risk of transmitting the virus is highest if genital herpes is contracted during the late stages of the pregnancy. A mother with long standing or recurring herpes infection usually has sufficient antibodies to the virus to prevent the infant becoming infected. Neonatal herpes can also be contracted when an infant comes into contact with an infected person e.g. being kissed by and adult with cold sores. A cesarean birth may be advised for mothers who have active genital lesions.
  • Herpesvirus: A group of DNA viruses that occur in humans
  • Hickory tussock moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Hickory tussock moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Homozygous protein C deficiency: A rare, potentially lethal disorder involving a severe deficiency of protein C which results in excessive blood clotting. It is characterized by skin lesions that tend to occur on the limbs mainly but may affect the buttocks, abdomen, scrotum and scalp.
  • Human adjuvant disease: This is a connective tissue disease that affects some people after the injection of synthetic material for cosmetic surgery
  • Hydroa vacciniforme: A rare skin disorder characterized the development of crusting skin eruptions following exposure to the sun.
  • Hydroid poisoning: Hydroids are a type of jellyfish commonly found in the warmer oceans of the world.
  • Hypomelanosis of Ito: A rare genetic neurocutaneous disorder characterized by unusual patterns of depigmented skin and associated disorders such as seizures, psychomotor retardation and eye abnormalities.
  • Hypopigmented lesions in children: Hypopigmented lesions in children refers are sores or ulcers that are colorless or have lost color in a child.
  • Ichthyosis bullosa of Siemens: A rare inherited form of the genetic skin blistering disorder called ichthyosis bullosa. The condition is characterized by widespread reddening, blistering and peeling of fragile skin that starts at birth. Symptoms tend to improve with age
  • Ichthyosis vulgaris, sex-linked, recessive: A genetic skin condition caused by a deficiency of steroid sulfatase and characterized by large brownish scales which can occur almost anywhere on the skin and can be disfiguring. The face, scalp, palms and soles are usually not involved. The condition only occurs in males.
  • IgA Pemphigus: Pemphigus is an autoimmune skin blistering disease which affects mainly the skin - mucous membranes are rarely affected. Usually the autoimmune reaction is mediated by IgG antibodies but in IgA pemphigus, IgA antibodies are involved. This form of the condition is generally quite harmless and responds well to medication.
  • Impetigo: Contagious skin rash from bacteria
  • Incontinentia Pigmenti: A rare genetic skin pigmentation disorder characterized by eye, teeth, bone, nail and hair malformations as well as central nervous abnormalities and mental deficiency.
  • Insect bites:
  • Invasive group A Streptococcal disease: Infection with Group A Streptococcal bacteria
  • Isothiazolinone allergy: An Isothiazolinone mix allergy refers to an adverse reaction by the body's immune system to Isothiazolinone mix which is used mainly as a preservative in products such as cosmetics, toiletries and laundry products. Exposure is usually through skin contact and hence results in skin symptoms.
  • Japanese poinsettia poisoning: The Japanese poinsettia is a shrubby plant with thick, succulent, green stems. The flowers form on the ends of the branches and are red. The plant is often used indoors and outdoors as an ornamental plant. The sap from the plant contains diterpene esters which can cause symptoms if eaten. Skin contact with the sap can also cause skin irritation. The plant is considered to have a relatively low level of toxicity.
  • Kaposi's Sarcoma: Kaposi's sarcoma is a cancerous tumor of the connective tissue, and is often associated with AIDS.
  • Keratoacanthoma, familial: A rare inherited condition characterized by sebaceous gland tumors on the skin and internal malignancies usually involving the digestive tract.
  • Keratosis palmoplantaris -- corneal dystrophy: A rare condition where a deficiency of a liver enzyme (tyrosinase aminotransferase) causes tyrosine levels in the blood to increase and result in eye problems, mental retardation and horny skin lesions which develop on pressure points on the hands and feet.
  • Latex allergies: When a person has an allergic reaction to latex
  • Latex catheters induced allergies: Latex catheters induced allergies are an adverse reaction by the body's immune system to the latex in catheters. Symptoms may vary depending on the location of the catheter.
  • Leiomyoma, hereditary multiple, of skin: An inherited disorder involving the development of multiple skin tumors which originate from smooth muscle fibers.
  • Leishmaniasis: A rare infectious disease caused by any of a number of parasitic Leishmania species. Infection can cause any of three different manifestations: cutaneous leishmaniasis, mucosal leishmaniasis and visceral leishmaniasis.
  • Leprosy, susceptibility to, 1: A chronic, progressive infectious disease caused by Mycobacterium leprae which causes skin sores and also affects the eyes, mucous membranes and peripheral nerves. The range of manifestations and severity of symptoms is quite variable. Researchers have discovered a number of genetic mutations linked to an increased susceptibility to leprosy. Type 1 is linked to a defect on chromosome 10p13.
  • Leprosy, susceptibility to, 2: A chronic, progressive infectious disease caused by Mycobacterium leprae which causes skin sores and also affects the eyes, mucous membranes and peripheral nerves. The range of manifestations and severity of symptoms is quite variable. Researchers have discovered a number of genetic mutations linked to an increased susceptibility to leprosy. Type 2 is linked to a defect on chromosome 6q25.2-q27.
  • Leprosy, susceptibility to, 3: A chronic, progressive infectious disease caused by Mycobacterium leprae which causes skin sores and also affects the eyes, mucous membranes and peripheral nerves. The range of manifestations and severity of symptoms is quite variable. Researchers have discovered a number of genetic mutations linked to an increased susceptibility to leprosy. Type 3 is linked to a defect on chromosome 4q32 and 4p14.
  • Leprosy, susceptibility to, 4: A chronic, progressive infectious disease caused by Mycobacterium leprae which causes skin sores and also affects the eyes, mucous membranes and peripheral nerves. The range of manifestations and severity of symptoms is quite variable. Researchers have discovered a number of genetic mutations linked to an increased susceptibility to leprosy. Type 4 is linked to a defect on chromosome 6p21.3.
  • Leprosy-like acne skin symptoms: Acne is a disorder of the pilosebaceous unit. The inflammatory process varies from a papule, pustule to a nodule.
  • Leukemia, T-Cell: A form of blood cancer characterized by the proliferation of cancerous T-cells which make up part of the body's immune system. The exact symptoms and progression vary depending on the subtype involved.
  • Lichen simplex chronicus: Lichen simplex chronicus refers to thickened itchy skin that results from persistently rubbing or scratching an area of skin.
  • Linear IgA dermatosis: A rare autoimmune skin condition characterized by blistered skin. The condition may occur after using certain drugs, following infection or there may be no apparent cause. It tends to occur in the non-reproductive years and most often affects the limbs, face or genital regions but may occur anywhere. The blisters may occur separately, in clusters or various other formations.
  • Majeed syndrome: A rare syndrome characterized by blood abnormality and recurring bone infections.
  • Marsh marigold poisoning: Marsh marigold is a low growing plant with rounded leaves and small yellow flowers. The plant can be found growing in the wild or in gardens. The leaves from the plant contain a chemical called protoanemonin which can cause symptoms if large quantities are eaten. The young leaves are actually edible if they are boiled with frequent changes of water.
  • Mastocytosis: A disorder where excessive amounts of mast cells proliferate in organs such as the skin, liver, bone, spleen and gastrointestinal tract. Mast cells occur in connective tissue and defend the body against disease by releasing histamine to stimulate the immune system.
  • McGrath Syndrome:
  • Melanoma: Melanoma is the most dangerous type of skin cancer. It is the leading cause of death from skin disease. It involves cells called melanocytes, which produce a skin pigment called melanin. Melanin is responsible for skin and hair color.
  • Melioidosis: Bacterial infection from soil or water.
  • Meningococcal disease: Dangerous bacterial infection causing meningitis or bacteremia.
  • Mental retardation -- arachnodactyly -- hypotonia -- telangiectasia: A very rare syndrome characterized mainly by mental retardation, short fingers, reduced muscle tone and spider veins (telangiectasia).
  • Mercaptobenzothiazole allergy: A Mercaptobenzothiazole allergy refers to an adverse reaction by the body's immune system to Mercaptobenzothiazole which is used mainly in the manufacturing process of rubber. Exposure routes can include skin contact or inhalation.
  • Mesquite Buck moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Mesquite Buck moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Mesquite stinger caterpillar poisoning: Contact with the poisonous hairs or spines of the Mesquite stinger caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Milkbush poisoning: The milkbush is an unusual succulent bush which has green branches with groups of leaves at the top of the branches. It originates from Africa and India. The sap contains diterpene which can cause symptoms if eaten or skin irritation if skin exposure occurs. The plant is considered to have a low level of toxicity if eaten.
  • Millipede poisoning: Millipedes are multi-segmented arthropods that have numerous legs. They can secrete poisonous substances from their body and some can squirt the poison at their predator. Death due to millipede poisoning has not been reported though the poison can cause skin symptoms.
  • Moccasin snake poisoning: The Moccasin snake is a poisonous snake found mainly in America and Asia. Moccasin snakes include the copperhead, cottonmouth and the Siberian, Central Asian and Malayan pit vipers. They are considered less venomous than rattlesnakes The snake venom contains toxins which affect the blood and tissues rather than the nervous system. Children tend to suffer more severe symptoms due to their smaller body size. Rapid swelling of the skin around the site of the bite is a sign of a more severe poisoning.
  • Molluscum contagiosum: Common wart-causing virus.
  • Moon Jellyfish poisoning: Contact with the Moon Jellyfish can result in various mild to moderate skin symptoms.
  • Mucosal leishmaniasis (espundia): A rare infectious disease caused by any of a number of parasitic Leishmania species. Infection can cause any of three different manifestations: cutaneous leishmaniasis, mucosal leishmaniasis and visceral leishmaniasis. Mucosal leishmaniasis tends to affect the mucosal areas of the mouth, nose and pharynx which can cause disfiguration.
  • Multiple keratoacanthoma, Ferguson-Smith type: A condition involving the development of a number of skin tumors which are invasive but regress spontaneously to leave only a pitted scar. The skin lesions tend to occur mostly on sun-exposed areas.
  • Mycobacterium haemophilum: A form of mycobacterium
  • NOMID syndrome: A rare autoinflammatory disease characterized by fever, rash, arthritic changes, eye problems and chronic meningitis.
  • Nakajo syndrome: A very rare syndrome characterized mainly by skin problems, various head anomalies and loss of fat in parts of the body.
  • Nakajo-Nishimura syndrome: A rare disorder involving muscle degeneration, loss of skin fat and impaired immune functioning.
  • Necrotizing fasciitis: A severe, progressive skin infection which causes progressive destruction of skin and underlying tissue. It is caused by certain bacteria and has a high mortality rate.
  • Neonatal herpes, type 1 virus: A very rare disorder where a newborn becomes infected with the herpes simplex virus usually through contact with a parent during or soon after the birth. The type 1 virus is severe compared to type 2
  • Neonatal herpes, type 2 virus: A very rare disorder where a newborn becomes infected with the herpes simplex virus usually through contact with a parent during or soon after the birth. The type 2 virus is mild compared to the type 1 virus.
  • Nerve symptoms: Symptoms affecting the nerves
  • Neurodermatitis: Lichen simplex chronicus refers to thickened itchy skin that results from persistently rubbing or scratching an area of skin.
  • Nicolaides-Baraitser syndrome: A very rare syndrome characterized mainly by short stature, reduced hair, short fingers, epilepsy and abnormal bone development.
  • Nodular melanoma: Nodular melanoma is the most aggressive form of melanoma. It grows in vertical direction from the outset and grows very fast (months). Nodular melanoma has no known precursor. It is a small black, or if amelanotic, pink nodule that simply enlarges. The lesions tend to bleed.
  • Non-Food Allergy -- mosquito: A mosquito allergy is an adverse reaction by the body's immune system to mosquito bites. The body's immune system produces immunoglobulin E (IgE - an antibody) and histamine in response to contact with the allergen. The specific symptoms that can result can vary amongst patients.
  • Nummular dermatitis: A skin disorder characterized by the development of round or oval skin lesions which itch and burn. In the initial stages, small red spots or blisters form and the grow and joint together to form a patch. The lesion eventually looks similar to a ringworm infection with a clear centre and a distinct border. The causes of some cases includes mercury fillings and allergy to rubber, nickel, formaldehyde or neomycin.
  • Oculocutaneous tyrosinemia: A rare condition where a deficiency of a liver enzyme (tyrosinase aminotransferase) causes tyrosine levels in the blood to increase and result in eye problems, mental retardation and horny skin lesions.
  • Oleander caterpillar poisoning: Contact with the poisonous hairs or spines of the Oleander caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Olindias sp poisoning: The Olindias is a type of hyrdozoan jellyfish found mainly in South American waters. It can deliver a relatively harmless but painful sting to humans.
  • Orf: A contagious viral skin disease contracted from infected sheep and goats. It results in painless vesicles that may become red, weeping sores which form a crust and then heal.
  • P-Phenylenediamine allergy: A p-Phenylenediamine allergy refers to an adverse reaction by the body's immune system to p-Phenylenediamine which is used mainly as a dye in hair colorants. Exposure usually occurs through skin contact and hence results in skin symptoms. In the case of hair colorants, skin reactions may be localized but can occasionally spread to other parts of the body. Very rare cases can result in anaphylaxis.
  • Pachyonychia congenita recessive: A rare, recessively inherited disorder where the nails is white and the skin is blistered.
  • Pacifiers induced allergies: Pacifiers induced allergies are an adverse reaction by the body's immune system to the latex in pacifiers. Symptoms usually involve the mouth.
  • Paget's Disease: Breast carcinoma involving nipple and areola.
  • Pale tussock moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Pale tussock moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Paming moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Paming moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Paracoccidioidomycosis: Infection by the fungus Paracoccidiodes brasiliensis which usually affects the lungs but can also involve the skin, mucous membranes, lymphatic system and other parts of the body.
  • Paragonimiases -- lung infection: Infection by a parasitic worm, Paragonimus westermani, which are a type of lung fluke which invade the lungs and other organs where they cause problems. Infection occurs through eating freshwater crabs and crayfish which have not been cooked sufficiently.
  • Paragonimiasis: Infection by a parasitic worm, Paragonimus westermani, which are a type of lung fluke which invade the lungs, and sometimes other organs, where they cause problems. Occasionally the parasites infect the brain which can occasionally result in death. Infection occurs through eating freshwater crabs and crayfish which have not been cooked sufficiently.
  • Parapsoriasis: A group of skin condition characterized by red scaly skin which resemble psoriasis. The chronic, inflammatory skin lesions are relatively difficult to treat. The skin lesions may develop into cutaneous T-cell lymphoma.
  • Peanut allergies: A hypersensitive state that is due to exposure to an allergen contained in peanuts
  • Pellagra-like syndrome: A rare disorder where the body is unable to metabolise tryptophan which causes a distinctive skin rash and neurological symptoms.
  • Pemphigus: A rare group of autoimmune skin disorders where blisters or raw sores develop on the skin and mucous membranes. The bodies immune system destroys proteins the hold skin cells together resulting in blistering. The condition can be life-threatening if untreated.
  • Pemphigus Foliaceus: A relatively milder form of the autoimmune skin disorder called pemphigus. Blisters occur on the skin but usually the mucous membranes are unaffected.
  • Pemphigus Vulgaris: A severe autoimmune skin disease characterized by blistering of the skin including the mucous membranes inside the mouth and esophagus.
  • Pemphigus and fogo selvagem: An autoimmune skin disease characterized by skin blisters and a burning sensation. It is endemic particularly in Brazil but may also occur in other countries.
  • Pemphigus paraneoplastic: A rare type of autoimmune skin blistering disease which affects the skin and/or mucous membranes and occurs in patients with cancer.
  • Pemphigus vulgaris, familial: A very rare skin blistering disorder caused by an autoimmune reaction. The mucous membranes as well as the skin is affected. Soft fragile blisters usually start in the mouth and on the scalp. Healed blisters leave no scarring.
  • Penicillin allergy: Taking penicillin (a type of antibiotic) can cause an allergic response in some people. It involves the body's immune system overreacting to the drug. The type and severity of symptoms can vary considerable though skin symptoms are the most common allergic response to drugs. Penicillin allergy is one of the more common types of drug allergies.
  • Periorbital cellulitis: Bacterial infection of the superficial tissues surrounding the eyes, often following a conjunctivitis or middle ear infection
  • Pfiesteria piscicida infection: Pfiesteria piscicida is a tiny marine organism called a dinoflagellate that is found in waters where fresh and salt water mix e.g. at river mouths. It is believed to be responsible for killing fish as well as health problems in humans.
  • Pfiesteria piscicida poisoning: Pfiesteria piscicida is an estuarine microorganism (dinoflagellate) that can cause illness in humans as well as fish. The particular toxin involved has not yet been identified. The microorganism may release toxins into the water or it may be aerosolized which can result in skin, eye and respiratory exposure. The condition is not contagious and they symptoms may vary considerably amongst patients.
  • Pfiesteria poisoning: Pfiesteria is an estuarine microorganism (dinoflagellate) that can cause illness in humans as well as fish. The particular toxin involved has not yet been identified. The microorganism may release toxins into the water or it may be aerosolized which can result in skin, eye and respiratory exposure. The condition is not contagious and they symptoms may vary considerably amongst patients.
  • Pfiesteria shumwayae poisoning: Pfiesteria shumwayae is an estuarine microorganism (dinoflagellate) that can cause illness in humans as well as fish. The particular toxin involved has not yet been identified. The microorganism may release toxins into the water or it may be aerosolized which can result in skin, eye and respiratory exposure. The condition is not contagious and they symptoms may vary considerably amongst patients.
  • Phaeohyphomycosis: An opportunistic infection that is caused by dermatiaceous fungi
  • Phenylketonuria: A metabolic disorder where there is a deficiency of the enzyme phenylalanine hydroxylase which leads to a harmful buildup of the phenylalanine in the body. Normally the phenylalanine is converted into tyrosine. The severity of the symptoms can range from severe enough to cause mental retardation to mild enough not to require treatment. Severity is determined by the level of impairment of enzyme activity of phenylalanine hydroxylase.
  • Phototoxic eczema: Phototoxic eczema is skin irritation and inflammation which occurs as an abnormal response to exposure to UV light radiation. The cause of this sensitivity may result from the use of certain drugs or exposure various other photosensitizing substances such as certain plants.
  • Piggyback plant poisoning: Piggyback plant is a herbaceous plant which has green leaves mottled with a light color and spikes of small flowers which are usually brownish. It is often used indoors and outdoors as an ornamental plant. The plant can cause allergic skin reaction in susceptible people.
  • Pigmented lesion: Coloured by deposit of pigment.
  • Pinta: A tropical American skin disease that only affects dark-skinned races. It is caused by an organism the causes thickening and loss of pigmentation of the skin.
  • Pityriasis lichenoides et varioliformis acuta: An acute inflammatory skin condition possible caused by abnormal immune system functioning. It involves the development of a skin rash consisting of small skin bumps which eventually blister and form crusted red-brown spots.
  • Plague: Any epidemic disease with a high death rate.
  • Poikiloderma of Kindler: A rare disorder characterized by fragile skin which blisters easily even after a mild trauma as well as photosensitivity and striated skin pigmentation (diffuse poikiloderma striate.
  • Poikiloderma of Rothmund-Thomson: A rare disease which causes sufferers to have a senile-like appearance with skin, growth, hair and eye abnormalities.
  • Poinsettia poisoning: The poinsettia is shrubby plant which bears large leaves with small flowers nestled in bright red large leaves. The plant contains diterpene esters in the sap which can cause symptoms if eaten or skin irritation if skin contact occurs. The plant is considered to have a relatively low level of toxicity.
  • Pollen allergy: An allergic reaction that occurs due to exposure to pollen
  • Polyarteritis nodosa: A serious blood vessel disease where small and medium-sized arteries become swollen and damaged and are unable to adequately supply oxygenated blood to various tissues in the body. The disease can occur in a mild form or a serious, rapidly fatal form.
  • Pompholyx (dyshidrotic eczema): Pompholyx is an itchy skin condition characterized by small fluid-filled blisters. The condition tends to predominantly affect the fingers, toes, palms and soles. This form of eczema is relatively uncommon.
  • Porphyria: A group of disorders characterized by excess production of porphyrin or its precursors which affects the skin and/or nervous system.
  • Portugese Man-of-War larvae envenomation: The tiny stinging larvae of the Portugese Man-of-War can release a toxin if they are put under pressure. Thus, any larvae trapped under swimming bathers or caps can cause toxins to be released. The skin develops an allergic response to the toxin and a rash forms. Swimming clothes contaminated by the stinging cells can produce a reaction even weeks after they have been washed and dried as the toxins are still able to be released from trapped stinging cells. Rubbing, showering in fresh water and wearing contaminated bathing suits for a long time after getting out of the water tend make the rash worse. Symptoms other than those involving the skin may occur occasionally. The condition most often occurs in the Atlantic Ocean.
  • Postoperative septicaemia: When a person contracts a bacterial infection in their blood system that occurs after an operation
  • Pressure sore: A sore that develops due to excessive pressure placed upon that area of skin
  • Primary cutaneous CD30-positive T-cell lymphoproliferative disorders: A form of primary T-cell lymphoma of the skin which is made up of CD30-positive anaplastic lymphoid cells. The condition generally has a very good prognosis with skin lesions usually regressing on their own though relapses can be frequent.
  • Primrose poisoning: Primrose is a herbaceous plant which has hairy leaves and stems. It is often used indoors and outdoors as an ornamental plant. Skin contact with the hairy leaves or stems can result in an allergic skin reaction in susceptible people.
  • Processionary tree caterpillar poisoning: A dark, grey-black caterpillar which can cause varying symptoms on contact with its hairs or spines.
  • Protein deficiency:
  • Protoporphyria: An inherited disorder where an enzyme defect causes excess protoporphyrin to build up in the skin. The protoporphyrin reacts to light and causes a painful burning sensation on the skin.
  • Psoriasis: Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. It affects a significant number of people. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. It affects a significant number of people. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 1: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 1 is linked to a defect in the HLACw6 gene on chromosome 6p21.3. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 10: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 10 is linked to a defect in a gene on chromosome 18p11.23. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 11: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 11 is linked to a defect in a gene on chromosome 5q31.1-q33.1. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 12: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 12 is linked to a defect in a gene on chromosome 20q13. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 2: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 2 is linked to a defect in a gene on chromosome 17q25. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 3: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 3 is linked to a defect in a gene on chromosome 4q. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 4: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 4 is linked to a defect in a gene on chromosome 1q21. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 5: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 5 is linked to a defect in a gene on chromosome 3q21. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 6: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 6 is linked to a defect in a gene on chromosome 19p13. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 7: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 7 is linked to a defect in a gene on chromosome 1p. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 8: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 8 is linked to a defect in a gene on chromosome 16q. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriasis Susceptibility 9: A predisposition to developing psoriasis that is linked to a defective gene related to the immune system. Type 9 is linked to a defect in a gene on chromosome 4q31-q34. Psoriasis is an inflammatory skin condition where the defective immune system causes skin cells to grow rapidly. Arthritis, which can be severe, is associated with the psoriasis in up to a third of cases. Not all patients who are susceptible to the condition will develop it - roughly 10% of those susceptible will actually develop the condition. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriatic Arthritis, susceptibility to: An inflammatory condition where the defective immune system causes joint inflammation as well as skin cells to grow rapidly causing psoriasis. Not all patients who are susceptible to the condition will develop it. There are various environmental factors which can trigger the onset of the disease e.g. strep throat (common trigger), some medication, stress and cold weather. Once the disease develops, it may resolve on its own or with treatment or may become a persistent chronic condition. The severity and duration of symptoms is variable.
  • Psoriatic arthritis, juvenile form: A type of arthritis associated with psoriasis in children. Psoriasis and arthritis are both inflammatory conditions with one affecting the skin and the other affecting the joints. The arthritis tends to precede the psoriasis.
  • Pyogenic arthritis -- pyoderma gangrenosum -- acne: A very rare autoinflammatory disorder involving the joints and skin. Sufferers develop arthritis, skin lesions and severe acne during adolescence. Usually only one joint is affected during episodes and various joints can be affected - especially the elbows, knees and ankles.
  • Pyogenic arthritis, pyoderma gangrenosum, and acne: A very rare autoinflammatory disorder involving the joints and skin. Sufferers develop arthritis, skin lesions and severe acne during adolescence. Usually only one joint is affected during episodes and various joints can be affected - especially the elbows, knees and ankles.
  • Ramsay Hunt syndrome Type II: A condition caused by a reactivation of the herpes simplex virus and resulting in facial paralysis, ear pain and skin blistering.
  • Randa's Eyed Silk moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Randa's Eyed Silk moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Rattle snake poisoning: The Rattle snake is a poisonous snake found mainly in America. They are distinguished by a characteristic rattle at the tip of their tail.
  • Reactive angioendotheliomatosis: A rare benign disorder of the blood vessels in the skin involving excessive growth of cells lining the inside of blood vessels. The growths can eventually block of the blood vessel and cause localized tissue death or necrosis. It can be associated with conditions such as systemic infections and dysglobulinemia. The lesions can occur anywhere on the skin and can lead to skin ulceration in serious cases.
  • Red Whelk poisoning: Red Whelk are colorful, carnivorous snail found mainly in Britain and Japan. The salivary gland of some whelks contains tetramine which can cause symptoms in humans if eaten. Raw, cooked or canned whelk can cause poisoning. Red whelk have the highest concentration of toxins in the summer. Whelk is often used as fish bait.
  • Reiter’s syndrome: A form of reactive arthritis characterized by arthritis, urethritis, conjunctivitis and skin lesions.
  • Rickettsia: A self limiting condition that is transmitted by mites
  • Rickettsial disease: A disease caused by infection with rickettsial bacteria which are transmitted by arthropods such as ticks, mites and lice. Different rickettsial bacteria can cause different types of infections such as typhus, spotted fever and trench fever. Symptoms can vary somewhat between the different types.
  • Ritter syndrome: A rare infantile skin disorder involving severe redness, inflammation, blistering and peeling of skin and mucous membranes which can result from a variety of infections, malignancies and drugs.
  • Rodent ulcer: Facial ulcer not actually related to rodents
  • Rothmund-Thomson Syndrome: A syndrome which is characterized by atrophy, pigmentation and telangiectasia of the skin.
  • Roundworm: A worm of the class nematode
  • Roy-Maroteaux-Kremp syndrome: A very rare syndrome characterized mainly by skin lesions abnormal bone development and spastic paraplegia.
  • SAPHO syndrome: A rare disorder involving skin (acne, pustulosis), bone (hyperostosis, osteitis) and joint problems.
  • Satin moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Satin moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Scabbing skin: The occurrence of scabbing that is located on the skin
  • Scabies: Mite infection of the skin common in institutions.
  • Scrub typhus: Type of typhus usually caught from ticks
  • Sea anemone larvae envenomation: The tiny stinging larvae of certain sea anemone (Edwardsiella lineata) can release a toxin if they are put under pressure. Thus, any larvae trapped under swimming bathers or caps can cause toxins to be released. The skin develops an allergic response to the toxin and a rash forms. Swimming clothes contaminated by the stinging cells can produce a reaction even weeks after they have been washed and dried as the toxins are still able to be released from trapped stinging cells. Rubbing, showering in fresh water and wearing contaminated bathing suits for a long time after getting out of the water tend make the rash worse. Symptoms other than those involving the skin may occur occasionally.
  • Sea bather's eruption: A rash that can develop sometimes when swimming in the ocean. The rash forms on the skin covered by the bathing suit and is caused by an allergic response to stinging cells from the larvae of certain sea anemones and thimble jellyfish which become trapped under the bathers. Stings are most likely to occur in summer. Swimming clothes contaminated by the stinging cells can produce a reaction even weeks after they have been washed and dried as the toxins are still able to be released from trapped stinging cells. Rubbing, showering in fresh water and wearing contaminated bathing suits for a long time after getting out of the water tend make the rash worse. Symptoms other than those involving the skin may occur occasionally. The condition most often occurs in Thailand, Brazil, the Bahamas and the Philippines.
  • Sea onion poisoning: Sea onion is a bulbous herb which has long narrow leaves and tall stems of small, usually white, flowers. The plant is often used indoors or outdoors as an ornamental plant. The plant contains cardiac glycoside which causes gastrointestinal symptoms if eaten. The plant is considered to have a relatively low level of toxicity. Skin irritation can also result from skin exposure to the juice from the bulb.
  • Sea thimble larvae envenomation: The tiny stinging larvae of the sea thimble can release a toxin if they are put under pressure. Thus, any larvae trapped under swimming bathers or caps can cause toxins to be released. The skin develops an allergic response to the toxin and a rash forms. Swimming clothes contaminated by the stinging cells can produce a reaction even weeks after they have been washed and dried as the toxins are still able to be released from trapped stinging cells. Rubbing, showering in fresh water and wearing contaminated bathing suits for a long time after getting out of the water tend make the rash worse. Symptoms other than those involving the skin may occur occasionally.
  • Selenium -- overuse: Excessive use of selenium can case various adverse symptoms.
  • Senecio poisoning: Senicio is a herbaceous plant which bears groups of small, usually yellow flowers. The plant can be found growing in the wild and is also used indoors and outdoors as an ornamental plant. The leaves contain chemicals which can cause symptoms if eaten or skin irritation upon skin exposure. The plant is considered to have a low level of toxicity.
  • Sensations: Changes to sensations or the senses
  • Seronegative Arthritis: Classification given to the group of joint conditions with similar features to rheumatoid arthritis, but affecting different joints and lacking the specific autoantibodies used to identify rheumatoid arthritis
  • Shingles: Infectious viral infection occuring years after chickenpox infection.
  • Short limbs subluxed knees cleft palate: A rare syndrome characterized mainly by short limbs, partially dislocated knees and a cleft palate.
  • Silky Oak poisoning: The silky oak is a tree that bears orange-red, bottlebrush-like flowers. It is found in Australia and contains a chemical called resorcinol which can cause severe skin irritation on exposure.
  • Silver Spotted Tiger moth caterpillar poisoning: Contact with the poisonous hairs or spines of the Silver Spotted Tiger moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Skin Diseases, Vesiculobullous: Skin diseases involving blisters which may occur in small localized areas of the skin or be spread over large areas of skin.
  • Skin Diseases, Viral: Any condition affecting the skin and caused by a virus. There is a range of viruses that can affect the skin in a number of ways – Epstein-Barr, Fifth disease, viral warts, shingles, measles and herpes.
  • Skin allergies: A reaction to the exposure of the skin to an allergen
  • Skin allergy: A skin allergy is an adverse response by the body's immune system to an allergen. The response may occur when the allergen comes into contact with the skin or when it is inhaled or ingested. A skin allergy manifests in skin symptoms such as hives and itchy skin. The severity of the response is variable.
  • Skin conditions: Any condition that affects the skin
  • Skin pain: Pain affecting the skin.
  • Skin problems: Any condition that affects the skin
  • Skin rash: Change in the skin which affects the color, appearance or texture.
  • Skin symptoms: Symptoms affecting the skin.
  • Skin ulcer: The occurrence of an ulcer that is located on the skin
  • Smoldering adult T-Cell leukemia: A form of blood cancer affecting the T-cells which make up the body's immune system. The disease is caused by the HTLV-1 virus (human T-cell leukemia virus) which causes the proliferation of abnormal T-cells. The virus can be transmitted sexually and may lay dormant for decades. There are four subtypes: acute, chronic, lymphoma and smoldering. The acute and lymphoma subtypes have the poorest prognosis. The smoldering form tends to progress even slower than the chronic form and responds the best to treatment.
  • Sneddon-Wilkinson disease: A rare chronic condition involving the development of blisters and pustules, usually on the trunk, armpits and flexural areas. It is often associated with conditions such as thyroid problems, lupus and rheumatoid arthritis. The condition tends to flare up for a few weeks and the clear up for months or years before recurring.
  • Snow-on-the-mountain poisoning: Snow-on-the-mountain is a herbaceous plant which grows in the wild in North America but can also be used in gardens as an ornamental plant. The milky sap from the plant contains diterpene esters which can cause gastrointestinal symptoms if eaten and skin irritation upon skin exposure.
  • Soap allergy: An immune-mediated reaction to exposure to soap. Soap allergy tends to be more common in children and symptoms can vary in nature and severity.
  • Sores: Sores affecting the skin.
  • Sparse hair -- short stature -- skin anomalies: A rare syndrome characterized mainly by sparse hair, short stature and skin anomalies.
  • Sphingolipidosis: A group of diseases involving the abnormal metabolism and storage of a substance called sphingolipid. Symptoms will vary depending on the disease. Examples of diseases from this group include gangliosidosis, Gaucher's disease and Niemann-Pick disease.
  • Spiny elm caterpillar poisoning: Contact with the poisonous hairs or spines of the Spiny Elm caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Spirometra erinace-ieuropaei infection: Infection with a tapeworm species called Spirometra erinace-ieuropaei. Infection usually results from ingesting contaminated food or water. The parasite can migrate to any part of the body but usually resides under the skin where it develops into a nodule.
  • Spirometra mansoni infection: Infection with a tapeworm species called Spirometra mansoni. Infection usually results from ingesting contaminated food or water. The parasite can migrate to any part of the body but usually resides under the skin where it develops into a nodule.
  • Spirometra mansonoides infection: Infection with a tapeworm species called Spirometra mansonoides. Infection usually results from ingesting contaminated food or water. The parasite can migrate to any part of the body but usually resides under the skin where it develops into a nodule.
  • Spirometra theileri infection: Infection with a tapeworm species called Spirometra theileri. Infection usually results from ingesting contaminated food or water. The parasite can migrate to any part of the body but usually resides under the skin where it develops into a nodule.
  • Spirurida Infections: Infection with a nematode (worm) from the spirurida order. Nematodes from this order include Loa eyeworm, wuchereria and mansonella. The symptoms are determined by which species is involved. Some cases can result in severe complication if the nematode invades and organ or compresses vital nerves or blood vessels.
  • Squamous Cell Skin Cancer: Aggressive skin cancer arising due to sun exposure; lesions are locally invasive to surrounding tissues and may metastasise
  • Stevens Johnson syndrome: A rare but serious condition involving inflammation and blistering of the skin and mucous membranes. It is believed to be an allergic reaction that can occur in response to some drugs or infectious diseases.
  • Stinging Bark caterpillar poisoning: Contact with the poisonous hairs or spines of the Stinging Bark caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Stinging Nettle caterpillar poisoning: Contact with the poisonous hairs or spines of the Stinging Nettle caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Stinging Rose caterpillar poisoning: Contact with the poisonous hairs or spines of the Stinging Rose caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Striped Blister Beetle poisoning: The striped blister beetle is native to many parts of America and Canada. Animals that accidentally eat the beetles can become quite ill and they can also cause symptoms in humans if accidentally ingested. The beetles contain toxic substances called cantharidin and pederin which can cause symptoms through skin or eye exposure as well as through ingestion.
  • Sun allergy: An immune system reaction to sun exposure which usually takes the form of a red itchy skin rash.
  • Sunburn: A skin inflammatory reaction due to overexposure to sun
  • Sunscreen allergy: An immune-mediated reaction to exposure to sunscreen. Sunscreen allergy tends to be more common in children and symptoms can vary in nature and severity.
  • Superficial spreading melanoma: Superficial spreading melanoma is usually characterized as the most common form of cutaneous melanoma in Caucasians.
  • Sweet Syndrome:
  • Systemic lupus erythematosus: chronic autoimmune disease that can be fatal, though with recent medical advances, fatalities are becoming increasingly rare.
  • Systemic mastocytosis: A condition which is characterized by an accumulation of mast cells in the tissues of the body
  • Taeniasis: An infection with a type of tapeworm
  • Tinea: A condition which is characterized by an infection caused by a fungus
  • Toxic epidermal necrolysis: A skin condition causing widespread blisters to erupt over greater than 30% of the body.
  • Transient bullous dermolysis of the newborn: A rare blistering skin disorder that affects infants and is inherited in a dominant manner. The blistering usually only occurs during the first year of life. The blisters tend to occur mainly on the extremities and other parts of the body that receive more friction.
  • Trichinosis: Worm infection usually caught from pigs
  • Trichosporin infection: A very rare infectious disease caused by the Trichosporon species. This type of infection tends to be opportunistic and hence only affects patients who are immunocompromised - patients with blood cancers appear to be the most prone. The infection may be localized or spread throughout the body (disseminated) which is usually fatal. Symptoms and severity may vary considerably depending on the location and extent of the infection.
  • True Jellyfish larvae envenomation: The tiny stinging larvae of true jellyfish (such as Linuche unguiculata) can release a toxin if they are put under pressure. Thus, any larvae trapped under swimming bathers or caps can cause toxins to be released. The skin develops an allergic response to the toxin and a rash forms. Swimming clothes contaminated by the stinging cells can produce a reaction even weeks after they have been washed and dried as the toxins are still able to be released from trapped stinging cells. Rubbing, showering in fresh water and wearing contaminated bathing suits for a long time after getting out of the water tend make the rash worse. Symptoms other than those involving the skin may occur occasionally. The jellyfish most often occur in the colder oceans of the world.
  • Tuberous sclerosis: A rare genetic disorder characterized by harmartomatous skin nodules, seizures, phakomata and bone lesions.
  • Tuberous sclerosis, type 1: A rare genetic disorder with a variety of abnormalities such as seizures, mental retardation, skin lesions and nodules in various body tissues and organs.
  • Tussock moth caterpillar poisoning: A hairy, bright-colored caterpillar which can cause skin symptoms on contact with the hair. Inhalation of the hairs can cause respiratory symptoms and eye exposure can also result in symptoms. Patients with pre-existing asthma or atopic allergies may suffer more severe symptoms.
  • Ulcerative colitis: Ulcerative colitis (Colitis ulcerosa, UC) is a form of inflammatory bowel disease (IBD). Ulcerative colitis is a form of colitis, a disease of the intestine, specifically the large intestine or colon, that includes characteristic ulcers, or open sores, in the colon.
  • Variegate porphyria: A rare metabolic disorder characterized by a deficiency of a certain enzyme which results in a build-up in the body of porphyrins or their precursors. This form of hepatic porphyria causes the sufferer to have acute attacks as well as skin sensitivity.
  • Vasculitis hypersensitivity: A condition which is characterised by a reaction that results in the inflammation of the blood vessels
  • Vibrio infection -- Vibrio alginolyticus: An infectious disease caused by a bacteria called Vibrio alginolyticus. This bacterium tends to cause ear and wound infections.
  • Vibrio infection -- Vibrio damsela: An infectious disease caused by a bacteria called Vibrio damsela. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Wound infection is the most common disease associated with this bacteria and septicemia and gastroenteritis is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infection -- Vibrio fluvialis: An infectious disease caused by a bacteria called Vibrio fluvialis. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Gastroenteritis is the most common disease associated with this bacteria and septicemia is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infection -- Vibrio furnissii: An infectious disease caused by a bacteria called Vibrio furnissii. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Gastroenteritis is the most common disease associated with this bacteria and septicemia and wound infection is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infection -- Vibrio holisae: An infectious disease caused by a bacteria called Vibrio holisae. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Gastroenteritis is the most common disease associated with this bacteria and septicemia is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infection -- Vibrio metschnikovii: An infectious disease caused by a bacteria called Vibrio metschnikovii. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Gastroenteritis is the most common disease associated with this bacteria and septicemia is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infection -- Vibrio mimicus: An infectious disease caused by a bacteria called Vibrio mimicus. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Gastroenteritis is the most common disease associated with this bacteria and septicemia and wound infection is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infection -- Vibrio parahaemolyticus: An infectious disease caused by a bacteria called Vibrio parahaemolyticus. The nature and severity of symptoms can vary considerably depending on the type of infection caused - gastroenteritis, wound infection or septicemia. Gastroenteritis is the most common disease associated with this bacteria and septicemia is relatively rare. Infection usually occurs through consumption of contaminated seafood or exposure of a wound to contaminated water. The elderly and very young tend to suffer more severe symptoms.
  • Vibrio infections: Infection by a bacteria which occurs naturally in seawater and in the stomach of many seawater animals. It is a serious infection and accounts for most seafood-related deaths. It causes severe gastrointestinal symptoms and can also cause wound infection.
  • Vibrio vulnificus: Bacteria commonly infecting oysters and seafood.
  • Visceral leishmaniasis: A tropical disease caused by a protozoan organism and transmitted to humans through sand fly bites. Also called Assam fever, black fever, dumdum fever, ponos or kala-azar.
  • Visceral leishmaniasis (kala-azar): A rare infectious disease caused by any of a number of parasitic Leishmania species. Infection can cause any of three different manifestations: cutaneous leishmaniasis, mucosal leishmaniasis and visceral leishmaniasis. Visceral leishmaniasis infection involves the spleen, liver and bone marrow and can be fatal if untreated.
  • Vohwinkel syndrome: A rare condition where tight bands of thickened skin form around the base of fingers and toes and generally leads to self-amputation of the digit. Hearing loss is also associated with the condition.
  • Weals: Drug reaction, allergy, infection, lupus, overactive thyroid, polycythemia, rheumatic fever, blisters, amyloidosis, progesterone increase, Still's Disease, pregnancy, vasculitis
  • Wegener's granulomatosis: A rare disease involving blood vessel inflammation which can affect the blood flow to various tissues and organs and hence cause damage. The respiratory system and the kidneys are the main systems affected.
  • Wells syndrome: A rare disorder affecting the skin and characterized by a flame-shaped patch of raised red skin which eventually undergoes changes such as blistering and altered color.
  • White marked tussock moth caterpillar poisoning: Contact with the poisonous hairs or spines of the White marked tussock moth caterpillar can cause skin rashes or even a hypersensitivity reaction in some cases.
  • Wound drains and tubes induced allergies: Wound drains and tubes induced allergies are an adverse reaction by the body's immune system to the latex in wound drains and tubes which are often used during surgery. Symptoms may vary depending on the location of the wound drains and tubes.
  • Yaws: A rare infections disease caused by the spiral-shaped bacteria Treponema pertenue. The disease consists of three phases: skin lesions are followed by bone, joint and widespread skin symptoms and finally by inflammation and destruction of cartilage in the nose, pharynx and palate. Transmission can be through direct contact with infected skin, insect bites or sex.

Conditions listing medical symptoms: Skin lesion:

The following list of conditions have 'Skin lesion' 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: Skin lesion:

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

 

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