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Glossary for Mental health conditions

  • ADD: Attention Deficit Disorder (ADD) is a mental and behavioral disorder characterized by behavioral problems such as hyperactivity, inattention, concentration difficulty, and other mental symptoms. The related description Attention Deficit Hyperactivity Disorder (ADHD) may be a more modern description of the disease.

    Misdiagnosis of ADD is a well-known controversy in the sense that cases of hyperactivity in children may be over-diagnosed. There is a tendency for parents to seek and doctors to prescribe the drug Ritalin even in cases where the diagnosis of ADD or ADHD may be incorrect. Alternative diagnoses include normal child behavior (i.e. just an active child), food intolerances, or other behavioral disorders (see misdiagnosis of ADD).

    On the other hand, ADD is under-diagnosed in adults, with a large number of adults having ADD without knowing it; see misdiagnosis of Adult ADD.

  • ADHD: Attention Deficit Hyperactivity Disorder (ADHD) is a mental and behavioral disorder characterized by behavioral problems such as hyperactivity, inattention, concentration difficulty, and other mental symptoms. Typically, ADHD and associated hyperactivity is known as a childhood disorder, although ADD/ADHD in adults is known to be under-diagnosed. It is distinguished from Attention Deficit Disorder (ADD) which has a reduced focus on hyperactivity type symptoms.
  • AIDS Dementia Complex: A brain disorder that occurs in AIDS patients.
  • Abasiophilia: A sexual preference to people who are crippled or lame or people who need some sort of orthopedic appliance such as a leg braces, wheelchairs and spine braces.
  • Ablutophilia: A sexual attraction to bathing, showering or any other way of washing oneself.
  • Abuse dwarfism syndrome: Retarded growth, intelligence and social behavior due to child abuse. The child abuse can take the form of mental or physical cruelty or neglect.
  • Acarophobia: An exaggerated or irrational fear of mites, ticks, small insects and worms.
  • Achluophobia: An exaggerated or irrational fear of the night or darkness.
  • Acomoclitic: Acomoclitic refers to sexual urges, preferences or fantasies involving hairless genitals.
  • Acousticophilia: Acousticophilia refers to sexual urges, preferences or fantasies involving certain sounds.
  • Acousticophobia: An exaggerated or irrational fear of noise.
  • Acrophilia: Acrophilia refers to sexual urges or fantasies involving heights or high altitudes.
  • Acrotomophilia: A sexual preference for amputees.
  • Actirasty: Actirasty refers to sexual urges, preferences or fantasies involving the sun's rays.
  • Acute stress disorder: An acute anxiety state
  • Addiction: Any of various addictions to substances or activities.
  • Adhesive abuse: Adhesive abuse is the use of various inhalants for the purpose of achieving a "high". They are often used as a cheap, readily available alternative to street drugs but they can cause serious damage to the body. Adhesives include household glues, rubber cement and model aeroplane glue. These adhesives can be abused by sniffing them, spraying directly into the mouth, heating them and then inhaling them or injecting them directly into the body.
  • Adhesive addiction: Adhesive addiction refers to the compulsive need to abuse adhesives (e.g. sniffing them). Sufferers have withdrawal symptoms when attempting to stop the habit and feel unable to stop the habit despite knowing the harm it is causing their health. Aerosols are very damaging to the body and can readily result permanent brain damage and even death. Death can occur through chronic use and in rare cases can occur after one session of use. Children and teenagers are particular at risk for this type of addiction - it is readily available and users feel it gains them greater acceptance from their peers. Adhesives includes household glue, rubber cement and model airplane glue.
  • Adjustment Disorder: This is a maladaptive reaction to identifiable stress
  • Adolescent depression: It isnot unusual for young people to experience "the blues" or feel low occasionally. Adolescence is always an unsettling time, with the many physical, emotional, psychological and social changes that accompany this stage of life.
  • Adult ADD: Attention Deficit Disorder (ADD) is a mental disorder with symptoms such as hyperactivity, inattention, poor concentration, and other similar symptoms. The disorder is called "ADHD" in modern times; see more details about Adult ADHD.

    ADD can be undiagnosed into adulthood and the adult will have varying levels of dysfunction in their work, home and social lives. Affected adults have issues with as difficulting focusing on work tasks, boredom, distractedness, and so on. See symptoms of Adult ADHD.

  • Adult ADHD: Adult ADHD, (attention deficit hyperactivity disorder) is a common neurobehavioral developmental disorder with an onset in childhood that continues into adulthood. Children do not simply grow out of ADHD, as is often believed. Just the opposite is commonly true - the symptoms of ADHD often get worse as a child grows into adulthood. The predominant behaviors of adult ADHD are the same as in children and include:
    • Inattentiveness
    • Hyperactivity
    • Impulsivity

    These behaviors result in difficulties with:

    • Concentration
    • Remaining focused on a task or activity
    • Controlling behavior
    • Hyperactivity or over-activity

    The symptoms of adult ADHD can be treated, but there currently is no cure for the disorder. Most people with ADHD can be successfully treated and lead normal, productive lives at home, work, school and with friends and family. The cause or causes of ADHD are not yet known, although researchers believe that genes may be one factor in the development of the disease. It is most likely that the disorder is the result of a combination of elements, including environmental factors, traumatic head injuries, nutrition, and social influences.

  • Adult Panic-Anxiety Syndrome: A psychiatric disorder involving anxiety and panic attacks that occur for no obvious reason.
  • Aelurophobia: An exaggerated or irrational fear of cats.
  • Aerophobia: An exaggerated or irrational fear of fresh air, breezes and flying.
  • Aerosol abuse: Aerosol abuse is the use of various inhalants for the purpose of achieving a "high". They are often used as a cheap, readily available alternative to street drugs but they can cause serious damage to the body. Aerosols include air fresheners, hair spray, spray pain and deodorants. These aerosols can be abused by sniffing them, spraying directly into the mouth, heating them and then inhaling them or injecting them directly into the body.
  • Aerosol addiction: Aerosol addiction refers to the compulsive need to abuse aerosol (e.g. sniffing them). Sufferers have withdrawal symptoms when attempting to stop the habit and feel unable to stop the habit despite knowing the harm it is causing their health. Aerosols are very damaging to the body and can readily result permanent brain damage and even death. Death can occur through chronic use and in rare cases can occur after one session of use. Children and teenagers are particular at risk for this type of addiction - it is readily available and users feel it gains them greater acceptance from their peers. Aerosols includes spray pain, air freshener, deodorants and hair sprays.
  • Affective Disorders, Psychotic: A mental disorder involving mood disturbance and psychotic symptoms.
  • Agalmatophilia: A sexual attraction to statues, mannequins or dolls.
  • Aging brain syndrome: Aging processes in the brain can cause various psychological and neurological symptoms.
  • Agitated depression: Agitated depression is a major depressive disorder with restlessness and motor excitement. Agitated depression was once called melancholia agitata. It is now also known as mixed mania.
  • Agnosia: Agnosia is a loss of ability to recognize objects, persons, sounds, shapes, or smells while the specific sense is not defective nor is there any significant memory loss.
  • Agonophilia: Agonophilia refers to an unusual level of sexual excitement derived from foreplay consisting of struggling, wrestling and rape imitation
  • Agoraphilia: Agoraphilia refers to sexual urges, preferences or fantasies involving sex in pulic places.
  • Agoraphobia: Fear of unfamiliar surroundings
  • Agrexophilia: Agrexo refers to an unusual level of excitement that comes from knowing that other people are aware of their sexual activities.
  • Aguecheek disease: Patients with liver disease who develop symptoms of dementia after eating lots of protein (meat has a high protein level) due to an intolerance to the nitrogenous compounds in the protein.
  • Agyrophobia: An exaggerated or irrational fear of crossing roads. It includes a fear of being attacked on the street or being unable to defend oneself while crossing the road.
  • Aichmophobia: An exaggerated or irrational fear of pointy objects or needles.
  • Aischrolgia: Aischrolgia refers to sexual urges or arousal associated with the use of obscene language.
  • Albatross syndrome: Symptoms that occur after partial or total surgical removal of the stomach in patients with personality disorders. The symptoms experienced may be due to a peptic ulcer, salicylate addiction or for no detectable reason.
  • Albutophilia: Albutophilia refers to sexual urges, preferences or fantasies involving water.
  • Alcohol Withdrawal: Symptoms that occur when alcohol consumption is discontinued or reduced. Symptoms may vary depending on the level of dependence.
  • Alcohol abuse: Excessive use of alcohol ranging from binge drinking to severe alcoholism
  • Alcoholic paranoia: Paranoia that can occur in some people after alcohol consumption.
  • Alcoholism: Alcoholism is the compulsive urge to drink alcohol despite knowing the negative impact on one's health.
  • Alektorophobia: An exaggerated or irrational fear of chickens.
  • Algolagnia: Sexual enjoyment from pain .
  • Algophilia: Algophilia refers to sexual urges, preferences or fantasies associated with feeling pain.
  • Algophobia: An exaggerated or irrational fear of pain
  • Alien hand syndrome: A condition where a person seems to have no sense of association with their own hand. They feel that the hand is not under their control and moves on its own. Sometimes the patient may be unaware of the hands movements unless it is brought to their attention. The condition can result from a brain injury, stroke or infection or from brain surgery.
  • Allopellia: Allopellia refers to sexual urges, preferences or fantasies involving watching other people perform sexual acts.
  • Allorgasmia: Allorgasmia refers to the inability to orgasm without fantasizing about a more erotic sexual partner.
  • Altocalciphilia: Altocalciphilia refers to sexual urges, preferences or fantasies involving high heels.
  • Alzheimer disease 10: An inherited form of Alzheimer's. Type 10 is caused by a genetic defect on chromosome 10p13.
  • Alzheimer disease 12: An inherited form of Alzheimer's. Type 12 is caused by a genetic defect on chromosome 8p12-q22.
  • Alzheimer disease 13: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 1q21. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease 14: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 1q25. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease 15: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 3q22-q24. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease 16: Alzheimer disease 16 (late-onset) is a form of Alzheimer's disease that is linked to a defect on chromosome Xq21.3. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease 2, late-onset: Alzheimer disease 2 (late-onset) is a form of Alzheimer's disease that is linked to a defect on chromosome 19q13.2. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease 3, (early-onset Alzheimer disease): Alzheimer disease 3 is an early-onset form of Alzheimer's disease that is linked to a defect on chromosome 14q24.3. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease 5: An inherited form of Alzheimer's. Type 5 has a late onset and is caused by a genetic defect on chromosome 12p11.
  • Alzheimer disease 6: A genetic form of Alzheimer's. Type 6 has a late onset and is caused by a genetic defect on chromosome 10q24.
  • Alzheimer disease 7: An inherited form of Alzheimer's. Type 7 is caused by a genetic defect on chromosome 10p13.
  • Alzheimer disease 8: An inherited form of Alzheimer's. Type 8 is caused by a genetic defect on chromosome 20p.
  • Alzheimer disease 9: A genetic form of Alzheimer's. Type 9 has a late onset and is caused by a genetic defect on chromosome 19p13.2.
  • Alzheimer disease type 1: A degenerative brain disease characterized primarily by progressive dementia. Type 1 has an early onset (starts before the age of 65). It is caused by mutations in the APP gene which results in the production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
  • Alzheimer disease type 2: A degenerative brain disease characterized primarily by progressive dementia. Type 2 has a late onset - starts after the age of 65. It is believed to be caused by a combination of genetic mutations and environmental and lifestyle factors. The condition occurs when there is excessive production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
  • Alzheimer disease type 4: A degenerative brain disease characterized primarily by progressive dementia. Type 4 has an early onset (starts before the age of 65). It is caused by mutations in the PSEN2 gene which results in the production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
  • Alzheimer disease, early-onset, with cerebral amyloid angiopathy: An early-onset form of Alzheimer's disease that is linked to a defect on chromosome 21q21. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease, familial: A degenerative brain disease characterized primarily by progressive dementia. The familial form is very rare and is completely inherited and has an early onset (usually in the 4th decade). It occurs when there is excessive production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
  • Alzheimer disease, familial, 1: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 21q. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease, familial, 11: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 9p22.1. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease, familial, 3, with spastic paraparesis and apraxia: This form of Alzheimer's is an early-onset form of Alzheimer's that is linked to a defect on chromosome 14q24.3. It is characterized by features which are atypical for Alzheimer's - spastic paraparesis which occurs before the dementia symptoms and apraxia. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease, familial, 3, with spastic paraparesis and unusual plaques: This form of Alzheimer's is an early-onset form of Alzheimer's that is linked to a defect on chromosome 14q24.3. It is characterized by features which are atypical for Alzheimer's - spastic paraparesis which occurs before the dementia symptoms and unusual plaques in the brain. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease, familial, 4: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 1q31-q42. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Alzheimer disease, familial, type 3: A degenerative brain disease characterized primarily by progressive dementia. Type 3 has an early onset (starts before the age of 65). It is caused by mutations in the PSEN1 gene which results in the production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
  • Alzheimer's Disease: Dementia-causing brain disease mostly in seniors and the elderly.
  • Alzheimer's disease without Neurofibrillary tangles: A form of Alzheimer's that involves only plaques and no neurofibrillary tangles. This form tends to have an older age of onset and death and a shorter disease duration.
  • Amathophobia: An exaggerated or irrational fear of dust.
  • Amaurophilia: Amaurophilia refers to sexual urges, preferences or fantasies involving engaging in sex where the partner is unable to see them.
  • Amaxophobia: An exaggerated or irrational fear of riding in a vehicle or being in one.
  • Ambien overdose: Ambien is a prescription drug mainly used to treat insomnia. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Ambien withdrawal: Symptoms that occur when Ambien (Zolpidem) use is discontinued or reduced. Ambien is a sedative hypnotic drug. Symptoms may vary depending on the level of dependence.
  • Amelotasis: Amelotasis refers to sexual urges, preferences or fantasies involving people with missing limbs.
  • Amnesia: Memory loss
  • Amnesic disorder: Any condition which affects ones memory
  • Amnestic disorder: Memory decline disorder
  • Amomaxia: Amomaxia refers to sexual urges, preferences or fantasies involving having sex in a parked car.
  • Amotivational syndrome: An impaired desire to engage in normal social activities and situations due to external factors such as relationships, substance or events.
  • Amphetamine abuse: Use of the stimulant drugs known as amphetamines or "speed"
  • Amphetamine withdrawal: Symptoms that occur when amphetamine use is discontinued or reduced. Symptoms may vary depending on the level of dependence. Amphetamines include dexamphetamine (speed), Ritalin and MDMA (ecstasy).
  • Amputee fetishism: A fetish is sexual pleasure or gratification associated with a particular object or body part. Most people with a fetish don't seek help and are able to function fully despite their fetish. It is only when the fetish impairs a persons ability to function on a personal or social level that it can be a problem. Amputee fetishism is characterized by the association of sexual pleasure or gratification with amputees.
  • Amychophobia: An exaggerated or irrational fear of being scratched or clawed.
  • Anaclitism: Anaclitism refers to sexual urges, preferences or fantasies involving objects or activities normally associated with childhood. Toilet training, playing with children's toys such as dolls and breast sucking are subjects that may be associated with anaclitism.
  • Analgesic syndrome: The use of large quantities of pain-killer drugs can sometimes cause serious kidney damage as well as various other problems.
  • Anasteemaphilia: Anasteemaphilia refers to sexual urges, preferences or fantasies involving a sexual partner who is either much shorter or much taller.
  • Andromimetophilia: A sexual preference for male-to-female transsexuals.
  • Androphobia: An exaggerated or irrational fear of men
  • Anginophobia: An exaggerated or irrational fear of angina, choking or narrowness of the throat.
  • Anglophobia: An exaggerated or irrational fear of England or the English.
  • Animal Hoarding: A condition where a person has more pets than they can properly house and look after. These people believe they are able to care adequately for all of the pets and are often very attached to the animals.
  • Ankylophobia: An exaggerated or irrational fear of stiff or immobile joints.
  • Anorexia Nervosa: A disorder where a distorted sense of body image leads to self-starvation to the point of death in some cases.
  • Anorexia nervosa, genetic types: There is mounting evidence that anorexia nervosa may be caused by genetic factors which when combined with psychosocial factors can increase a persons risk of developing the condition.
  • Anosognosia: A condition where a person suffering who is suffering from a disability resulting from a brain injury but is in denial of the fact that they are indeed suffering from a disability. For example a person who has become blind after a brain injury may still firmly believe that they can see. Schizophrenics may refuse treatment because they refuse to acknowledge that there is something wrong with them.
  • Antholagnia: Antholagnia refers to sexual arousal resulting from smelling flowers.
  • Anthophobia: An exaggerated or irrational fear of flowers.
  • Anthropophagolagnia: Anthropophagolagnia refers to sexual urges, preferences or fantasies involving raping and then cannibalizing the victim.
  • Anthropophagy: Anthropophagy refers to sexual urges, preferences or fantasies involving cannibalism.
  • Anthropophobia: An exaggerated or irrational fear of people and groups of people.
  • Anti-Social Personality Disorder: A psychiatric condition characterized by chronic behavioral and social problems which often involves criminal behaviour.
  • Anti-social personalities: A group of psychological condition which are characterized by anti-social behaviour
  • Antlophobia: An exaggerated or irrational fear of floods.
  • Anton's syndrome: A condition where a person is suffering from complete or partial blindness but denies their condition even though they have medical evidence that proves otherwise.
  • Anxiety: A feeling of apprehension, and fear without apparent stimulus that is associated sometime with somatic responses
  • Anxiety attack: Sudden onset of extreme anxiety
  • Anxiety conditions: Medical conditions related to anxiety, fear, and panic.
  • Anxiety depression: Anxiety can sometimes co-occur with depression and produce a confusing clinical picture wherein one of the conditions maybe diagnosed and the other missed out on.
  • Anxiety, separation: A term used when children become upset when they are separated from a parent or carer. The situation is most commonly witnessed when children are taken to day care. Other situations include when the child is left with a baby sitter or made to sleep on his/her own. It is a normal condition during childhood.
  • Anxiety-tension syndrome: Anxiety associated with physical symptoms such as tense muscles and fatigue.
  • Apeirophobia: An exaggerated or irrational fear of infinity.
  • Apiophobia: An exaggerated or irrational fear of bees.
  • Apotemnophilia: Sexual enjoyment gained from being or becoming and amputee or even been seen as an amputee.
  • Aprosodia: A term used to describe the impaired ability to understand or use emotions in oral language.
  • Aquaphilia: Sexual arousal from water, especially such things as bathtubs and swimming pools.
  • Arachibutyrophobia: An exaggerated or irrational fear of peanut butter sticking to the roof of the mouth.
  • Arachnephilia: Arachnephilia refers to sexual urges, preferences or fantasies involving playing with spiders.
  • Arachnephobia: An exaggerated or irrational fear of spiders.
  • Aretifism: A sexual preference for people with no footwear.
  • 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.
  • Asphyxiaphilia: Asphyxiaphilia refers to sexual urges, preferences or fantasies involving a lack of oxygen or asphyxiation.
  • Asphyxiophilia: Sexual arousal from self-strangulation.
  • Asthenolagnia: Asthenolagnia refers to sexual arousal resulting from being humiliated or weakness.
  • Asthenophobia: An exaggerated or irrational fear of weakness or fainting.
  • Astraphobia: An exaggerated or irrational fear of lightning and thunder.
  • Astrophobia: An exaggerated or irrational fear of stars and celestial space.
  • Ataxiophobia: An exaggerated or irrational fear of muscular incoordination (ataxia). This disorder is not to be confused with ataxophobia which is a fear of disorder or untidiness.
  • Ataxophobia: An exaggerated or irrational fear of disorder or untidiness. This disorder is not to be confused with ataxiophobia which is a fear of muscular incoordination (ataxia).
  • Atelophobia: An exaggerated or irrational fear of imperfection.
  • Atephobia: An exaggerated or irrational fear of ruin.
  • Ativan overdose: Ativan is a prescription drug mainly used to treat anxiety. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Ativan withdrawal: Symptoms that occur when Ativan (Lorazepam) use is discontinued or reduced. Ativan is an anti-anxiety drug. Symptoms may vary depending on the level of dependence.
  • Attention Deficit Hyperactivity Disorder: Behavioral disorder with hyperactivity and/or inattention.
  • Attention Deficit and Disruptive Behavior Disorders: A condition characterized by attention problems and disruptive behavior. The condition is considered to be a grouping of three other disorders - oppositional defiant disorder, conduct disorder and attention-deficit hyperactivity disorder.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 1: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 1 is linked to a defect on chromosome 16p13.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 2: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 2 is linked to a defect on chromosome 17p11.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 3: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 3 is linked to a defect on chromosome 6q12.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 4: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 4 is linked to a defect on chromosome 5p13.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 5: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 5 is linked to a defect on chromosome 2q21.1.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 6: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 6 is linked to a defect on chromosome 13q12.11.
  • Attention Deficit-Hyperactivity Disorder, Susceptibility to, 7: ADHD or attention deficit hyperactivity disorder is a common neurobehavioral developmental disorder that usually occurs in childhood and can continue into adulthood. Researchers have discovered a number of genes linked to an increased susceptibility to ADHD. Type 7 is linked to a defect on chromosome 12q21.
  • Atypical depression: AD is a subtype of dysthymia and Major Depression characterized by mood reactivity - being able to experience improved mood in response to positive events.
  • Aulophobia: An exaggerated or irrational fear of flutes.
  • Aurophobia: An exaggerated or irrational dislike of gold.
  • Auroraphobia: An exaggerated or irrational fear of Auroral lights.
  • Autagonistophilia: Sexual arousal associated with being on stage.
  • Autassassinophilia: Sexual arousal from planning one's own murder.
  • Autogynephilia: A male's sexual arousal upon imagining himself as a female.
  • Automasochism: Automasochism refers to sexual urges, preferences or fantasies involving inflicting injuries or pain upon oneself.
  • Automysophilia: Automysophilia refers to sexual urges, preferences or fantasies involving being dirty or defiled.
  • Automysophobia: An exaggerated or irrational fear of being dirty.
  • Autophagy: Autophagy refers to sexual urges, preferences or fantasies involving eating one's own flesh.
  • Autophobia: An exaggerated or irrational fear of being egotistical or being by oneself.
  • Avlinolagnia: Avlinolagnia refers to sexual urges, preferences or fantasies involving the stomach.
  • Avoidant Personality Disorder: Personality type that avoids other people
  • Axillism: Axillism refers to sexual urges, preferences or fantasies involving using the armpit for sex.
  • Bacillophobia: An exaggerated or irrational fear of missiles.
  • Bacteriophobia: An exaggerated or irrational fear of bacteria.
  • Bald soprano syndrome: The inability to recognize a familiar face. Some people are able to recognize their own face. It is thought to be caused by a brain abnormality.
  • Barbiturate abuse: Abuse of barbiturate medications
  • Barophobia: An exaggerated or irrational fear of gravity.
  • Bathmophobia: An exaggerated or irrational fear of walking.
  • Bathophobia: An exaggerated or irrational fear of depths. This can include a fear of lakes or long hallways.
  • Batophobia: An exaggerated or irrational fear of passing high buildings.
  • Batrachophobia: An exaggerated or irrational fear of frogs or toads.
  • Battered spouse syndrome: The physical or emotional abuse of one partner in a relationship against the other partner.
  • Behavioral disorders: Disorders affecting behavior and emotional wellbeing
  • Behavioural disorders: Disorders that affect a persons behaviour
  • Bell mania: A rare life-threatening neuropsychiatric disorder involving delusions, hyperactivity and periods of fever. Death can occur within days or months without treatment.
  • Belonephobia: An exaggerated or irrational fear of pins and needles.
  • Belonphilia: Belonphilia refers to sexual urges, preferences or fantasies involving the use of needles.
  • Benson's syndrome: A rare neurodegenerative disorder characterized mainly by defective visual information processing which affects a person's ability to recognize familiar objects and people.
  • Benzodiazepine abuse: Abuse of benzodiazepine tranquiliser medications
  • Berserker-blind rage syndrome: A dissociative disorder where a person reacts violently to something they see, hear or feel.
  • Bestialsadism: Bestialsadism refers to sexual urges, preferences or fantasies involving delivering cruelty to animals.
  • Biastophilia: Biastophilia refers to sexual urges, preferences or fantasies involving performing sex acts with an unwilling partner.
  • Bibliokleptomania: A disorder where a person compulsively steals books.
  • Bibliomania: A type of obsessive-compulsive disorder where the patient compulsively collects books. The books bought are generally not even looked but are simply bought and hoarded. Multiple copies of the same book are often bought. The quantity of books collected usually far exceeds and useful purpose.
  • Bibliophagy: A disorder where a person compulsively eats books.
  • Bibliophobia: An exaggerated or irrational fear of books.
  • Bibliotaphy: A disorder where a person compulsively buries books.
  • Biiest: Biiest refers to females who have sexual urges, preferences or fantasies involving female feet.
  • Binge eating disorder: Excessive overeating but without purging
  • Binswanger Disease: Multi-infarct dementia, caused by damage to deep white matter.
  • Binswanger's Disease: A type of senile dementia characterized by chronic cerebrovascular disease.
  • Bipolar IV: Bipolar IV Disorder - BP IV for short - is major depression with mania or hypomania caused by taking antidepressants.
  • Bipolar V: Bipolar V involves patients who only experience depressive symptoms as a diagnosis of major depressive disorder, but have a family history of bipolar disorder.
  • Bipolar VI: Bipolar VI type is defined as having no depressive symptoms, only manic or hypomanic moods.
  • Bipolar disorder: Cycles of mania and depression; commonly called "manic-depression".
  • Bipolar disorder I: Bipolar I disorder is a mood disorder that is characterized by at least one manic or mixed episode. Most people with bipolar I disorder also suffer from episodes of depression.
  • Bipolar disorder II: Bipolar II is similar to bipolar I disorder, with moods cycling between high and low over time. Here , depressive episodes are more frequent and more intense than manic episodes. It is believed to be underdiagnosed because hypomanic behavior often presents as high-functioning behavior
  • Bipolar disorder/cyclothymic disorder/hypomania:
  • Bipolar-NOS (not otherwise specified): Bipolar Disorder Not Otherwise Specified is a catch-all diagnosis that is used to indicate bipolar illness that does not fit into the other diagnostic categories
  • Blastolagnia: Blastolagnia refers to sexual urges, preferences or fantasies involving young women especially teenagers.
  • Blennophobia: An exaggerated or irrational fear of slime.
  • Blueberry syndrome: A disorder involving language and behavioral problems. There is no detectable damage to the brain or emotional disorders.
  • Body Dysmorphic Disorder: Delusional belief about body shape or appearance
  • Body packer syndrome: Consuming packages of drugs for the purpose of concealing them for transportation.
  • Bogyphobia: An exaggerated or irrational fear of demons and goblins.
  • Bonnet syndrome: A condition where people with vision problems start having visual hallucinations (seeing things that aren't really there). The hallucinations can involve seeing lines or things such as birds or buildings that aren't there. It is usually seen in older people who have severe vision loss.
  • Borderline Personality Disorder: Mental condition with behavioral and emotional problems.
  • Borna disease: An infectious neurological disease that affects warm-blooded animals. There is disagreement as to whether the virus may be the underlying cause of some cases of mental illness in humans.
  • Brain -- bone -- fat: A rare inherited disease characterized by bone cysts and progressive presenile dementia.
  • Brain Fag syndrome: A type of neurotic disorder that was first observed in white collar workers in Africa.
  • Brief Psychotic Disorder: Episodes of brief psychosis
  • Briquet syndrome: A rare, chronic mental disorder characterized mainly by often claiming to have constant physical illness when none is able to be detected. It most often occurs in young females.
  • Bromidrosiphobia: An exaggerated or irrational fear of having unpleasant body odor.
  • Brontophobia: An exaggerated or irrational fear of thunder and thunderstorms.
  • Bulimia nervosa: Eating disorder with binging (overeating) and purging (vomiting).
  • Burnout syndrome: Severe stress caused by work-related physical or mental trauma.
  • CFS subtype 1 (cognitive, musculoskeletal, sleep, anxiety/depression): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 1 tends to be more severe with the dominant symptoms being anxiety, depression and cognitive, musculoskeletal and sleeping problems.
  • CFS subtype 2 ( musculoskeletal, pain, anxiety/depression): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 2 tends to be more severe with the dominant symptoms being anxiety, depression, pain and musculoskeletal problems.
  • CFS subtype 3 (mild): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 3 tends to have milder symptoms than other subtypes.
  • CFS subtype 4 (cognitive, musculoskeletal, sleep, anxiety/depression): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 4 tends to be dominated by cognitive symptoms.
  • CFS subtype 5 (musculoskeletal, gastrointestinal): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 5 tends to be dominated by musculoskeletal and gastrointestinal symptoms.
  • CFS subtype 6 (postexertional): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 6 tends to be dominated by excessive fatigue following exertion.
  • CFS subtype 7 (pain, infectious, musculoskeletal, sleep, neurological, gastrointestinal, neurocognitive, anxiety/depression): Chronic fatigue syndrome is a chronic condition which is characterized by symptoms such as severe persistent fatigue, depression, weakness, muscle pain and lack of energy. The condition is often debilitating and may be difficult to diagnose due to lack of specific tests for the condition. There is no known cause but it appears to be associated with a previous infection in some cases. CFS subtype 7 tends to be more severe with the dominant symptoms being pain, infections, anxiety, depression and musculoskeletal, sleep, neurological, gastrointestinal and neurocognitive problems.
  • Cadasil: A rare inherited condition which affects the small blood vessels of the brain. Damage to the vessels causes strokes and other problems.
  • Caffeine addiction: Caffeine addiction is the uncontrollable craving for caffeine products such as coffee. Other caffeinated products include diet pills, chocolate, pain killers, cold remedies and soft drinks. Cessation causes withdrawal symptoms which can vary in nature and severity.
  • Cainophobia: An exaggerated or irrational fear of novelty.
  • Cancerophobia: An exaggerated or irrational fear of cancer.
  • Cancerphobia: An exaggerated or irrational fear of cancer.
  • Cannabis dependence: Addiction to the illicit drug cannabis.
  • Capgras' syndrome: A rare delusional disorder where the patient believes that a friend or relative has been replaced by a double or imposter. They may even view themselves as a double. The disorder is often associated with schizophrenia or some sort of brain injury or damage.
  • Capnolagnia: Capnolagnia refers to sexual urges, preferences or fantasies involving watching other people smoking.
  • Carcinomatophobia: An exaggerated or irrational fear of cancer.
  • Carcinomophobia: An exaggerated or irrational fear of cancer.
  • Carcinophobia: An exaggerated or irrational fear of cancer.
  • Cardiomyopathy, Alcoholic: A weakened heart mucle due to excessive alcohol consumption. Symptoms are usually not evident until the heart becomes severely damaged.
  • Cardiophobia: An exaggerated or irrational fear of heart disease.
  • Catatonia: Mental condition causing total rigidity
  • Catatonic depression: Catatonic Schizophrenia means lessened muscle tone its symptoms are motor disturbances.
  • Catatonic syndrome: A rare syndrome often seen in schizophrenics or associated with central nervous system disturbances or brain trauma. The symptoms tend to occur in episodes with periods of remission in between.
  • Catheterophilia: Catheterophilia refers to sexual urges, preferences or fantasies involving using a catheter.
  • Cathisophobia: An exaggerated or irrational fear of sitting down.
  • Catoptrophobia: An exaggerated or irrational fear of mirrors.
  • Celtophobia: An exaggerated or irrational fear of Celts.
  • Cenophobia: An exaggerated or irrational fear of a void or open spaces.
  • Ceraunophobia: An exaggerated or irrational fear of thunder and lightning.
  • Chaetophobia: An exaggerated or irrational fear of hair.
  • Chat room addiction: Chat room addiction refers to the excessive amounts of time spent on computer chat rooms. When the person attempts to reduce the amount of time spent on the activity they suffer withdrawal symptoms such as irritability and anxiety. The preoccupation can cause problems with relationships and even with work performance.
  • Cheimatophobia: An exaggerated or irrational fear of cold.
  • Chemical addiction: Addiction to and abuse of various substances.
  • Cherophobia: An exaggerated or irrational fear of gaiety.
  • Child abuse: Physical, sexual, emotional abuse or neglect of child.
  • Childhood depression: Childhood depression is just as serious as adult depression. However, it is important to recognize that children have unique signs to be aware of when recognizing and diagnosing depression.
  • Childhood disintegrative disorder: A rare disorder where a period of normal development (a couple of years) is followed by delays in the development of motor, social and language skills. Previously acquired skills are lost.
  • Childhood-onset bipolar disorder: Bipolar disorder is a serious mental illness characterized by recurrent episodes of depression, mania, and/or mixed symptom states. These episodes cause unusual and extreme shifts in mood, energy, and behavior that interfere significantly with normal, healthy functioning.
  • Chinophobia: An exaggerated or irrational fear of snow.
  • Cholerophobia: An exaggerated or irrational fear of cholera.
  • Choreophilia: Choreophilia refers to sexual urges, preferences or fantasies involving dancing.
  • Chremastistophilia: Sexual arousal from being robbed or held.
  • Chrematistophilia: Chrematistophilia refers to sexual urges, preferences or fantasies involving being robbed or having to pay for sex.
  • Chrematophobia: An exaggerated or irrational fear of wealth.
  • Chrometophobia: An exaggerated or irrational fear of money.
  • Chromophobia: An exaggerated or irrational fear of colors.
  • Chronic Alcoholism -- Teratogenic Agent: There is strong evidence to indicate that chronic alcoholism during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
  • Chronic Fatigue Syndrome: Severe chronic fatigue disorder often following infection.
  • Chronic depression: Chronic depression is a mental disorder characterized by an all-encompassing low mood accompanied by low self-esteem, and loss of interest or pleasure in normally enjoyable activities and this maybe present for months together.
  • Chronic liver disease: Any form of chronic liver disease
  • Chronophilia: Sexual preferences involving partners of differing ages. For example, pedophilia involves a sexual preference for children.
  • Chronophobia: An exaggerated or irrational fear of time. Prisoners often develop a fear of time passing.
  • Cibophobia: An exaggerated or irrational fear of food.
  • Cigarette Smoking -- Teratogenic Agent: There is strong evidence to indicate that cigarette smoking during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
  • Cinderella syndrome: A term used to describe the wrongful accusations of adopted children against their stepmother. The false accusations may include allegations of mistreatment or neglect.
  • Cinderella's stepmother syndrome: A term used to describe the behaviors that stepmothers display in order to become more accepted by the family.
  • Claustrophilia: Claustrophilia refers to sexual urges, preferences or fantasies involving confinement in small spaces. Sexual arousal may be associated with lying in a coffin or some sort of box or even a wearing a straightjacket.
  • Claustrophobia: Fear of confined or enclosed spaces
  • Cleptophobia: An exaggerated or irrational fear of thieves or of being robbed by thieves.
  • Clerambault syndrome: A rare delusional disorder where a woman falsely believes that a man is in love with her. The man is usually someone in a high social or financial position than the woman. The woman may resort to harassing behaviors.
  • Clinophobia: An exaggerated or irrational fear of going to bed.
  • Cnidophobia: An exaggerated or irrational fear of insect stings.
  • Cocaine abuse: Stimulant drug with various effects
  • Cocaine addiction: An uncontrollable desire to use cocaine on a regular basis. Chronic cocaine use can lead to dependency in as little as two weeks. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
  • Cocaine overdose: Cocaine is an illegal and highly addictive recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Cocaine poisoning: Excessive ingestion of cocaine.
  • Cocaine withdrawal: Symptoms that occur when cocaine use is discontinued or reduced. Symptoms may vary depending on the level of dependence.
  • Cocktail party syndrome: A language problem that occurs in some mentally retarded people. The person is able to learn talk and acquire knowledge of words. They have good verbal and social skills but poor comprehension skills. Their chatter tends to involve the meaningless use of words.
  • Codeine overdose: Codeine is a prescription drug mainly used to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Codeine withdrawal: Symptoms that occur when Codeine use is discontinued or reduced. Codeine is a sedative pain-killer. Symptoms may vary depending on the level of dependence.
  • Coitophobia: An exaggerated or irrational fear of sexual intercourse.
  • Combat stress reaction: A term used in the military which refers to behaviors that result from the stress of fighting in a war.
  • Combined ADHD: Combined ADHD are those individuals with ADHD who have both inattentive and hyperactive, impulsive behaviors. Attention Deficit Hyperactivity Disorder, ADHD, is one of the most common mental disorders that develop in children. Children with ADHD have impaired functioning in multiple settings, including home, school, and in relationships with peers. If untreated, the disorder can have long-term adverse effects into adolescence and adulthood.
  • Cometophobia: An exaggerated or irrational fear of comets.
  • Compulsions: An irrestible impulse to perform a particular action.
  • Compulsive cheek biting: A form of obsessive compulsive disorder where a person compulsively bite their own cheeks. Sufferers can feel the pain they inflict on themselves but the feelings of gratification and stress relief prevent them from stopping. The severity and extent of damage to the cheek is variable. Stress and anxiety can trigger the cheek biting.
  • Compulsive face picking: A form of obsessive compulsive disorder where a person compulsively picks at the skin on their own face. Sufferers can feel the pain they inflict on themselves but the feelings of gratification and stress relief prevent them from stopping. The severity and extent of damage to the skin is variable. Stress and anxiety can trigger the compulsive skin picking.
  • Compulsive finger picking: A form of obsessive compulsive disorder where a person compulsively picks at the skin on their fingers, especially around the nails. Sufferers can feel the pain they inflict on themselves but the feelings of gratification and stress relief prevent them from stopping. The severity and extent of damage to the skin is variable. Stress and anxiety can trigger the compulsive finger picking.
  • Compulsive scalp picking: A form of obsessive compulsive disorder where a person compulsively picks at the skin on their own scalp. Sufferers can feel the pain they inflict on themselves but the feelings of gratification and stress relief prevent them from stopping. The severity and extent of damage to the skin is variable. Stress and anxiety can trigger the compulsive scalp picking.
  • Computer addiction: Computer addiction refers to the excessive amounts of time spent on the computer. The preoccupation can cause problems with relationships and even with work performance. The time spent on the computer does not refer to work-related activities.
  • Concentration camp survivor syndrome: A type of post-traumatic stress disorder that is seen in people who have surveved abuse in concentration camps.
  • Conduct Disorder: Behavioral disorder with antisocial behaviors
  • Confabulation: A term used when imagination becomes confused with memory or true memories are confused with false memories. It may have a psychological basis or may be caused by some sort damage to the brain or certain drugs used in chemical warfare (e.g. Quinuclidinyl benzilate). Patient's with Korsakoff's syndrome often display this condition.
  • Conversion Disorder: A psychological condition where physical symptoms arise due to emotional dilemmas.
  • Coprophilia: Coprophilia refers to sexual urges, preferences or fantasies involving faeces.
  • Coprophobiaphobia: An exaggerated or irrational fear of feces or excrement.
  • Cotard syndrome: A rare syndrome involving depression, suicidal thoughts and the belief that they no longer have a body and are already dead. Sometimes they believe that their body is rotting or that they have no blood or internal organs. Occasionally they believe they are immortal. The condition may have neurological or mental origins.
  • Coulrophobia: An exaggerated or abnormal fear of clowns. Children are most often affected but teenagers and adults can occasionally be affected as well.
  • Crack addiction: An uncontrollable desire to use crack on a regular basis. Chronic crack use can lead to dependency in as little as two weeks. Crack is a form of cocaine - powdered cocaine is heated with ammonia or sodium bicarbonate to make rocks of crack. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
  • Crack withdrawal: Symptoms that occur when cocaine hydrochloride use is discontinued or reduced. Symptoms may vary depending on the level of dependence.
  • Cremnophobia: An exaggerated or irrational fear of precipices.
  • Criminal injury: An injury occurring during the committal of a criminal action
  • Cryophobia: An exaggerated or irrational fear of extreme cold, frost or ice.
  • Cryptomnesia: This term refers to a situation where a person believes he is creating a new piece of written work (joke, poem, story etc) whereas it is actually an existing piece that they had previously come across but forgotten about.
  • Crystal meth addiction: An uncontrollable desire to use crystal meth on a regular basis. Crystal meth is a powerful stimulant used illegally for its effects. It is highly addictive and known by street names such as ice, speed, glass, crank and chalk. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
  • Crystallophobia: An exaggerated or irrational fear of glass or crystals.
  • Cyclothymic disorder: This disorder is a mild form of bipolar II disorder consisting of recurrent mood disturbances between hypomania and dysthymic mood.
  • Cymophobia: An exaggerated or irrational fear of waves.
  • Cynophobia: An exaggerated or irrational fear of dogs.
  • Cypridophobia: An exaggerated or irrational fear of venereal disease.
  • Dacryphilia: Dacryphilia refers to sexual urges, preferences or fantasies involving seeing tears in the eyes of their sexual partner.
  • Damocles syndrome: Stress, anxiety and uncertainty experienced by people who have been successfully treated for childhood cancer.
  • Darvocet overdose: Darvocet is a prescription drug mainly used to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Darvocet withdrawal: Symptoms that occur when Darcovet use is discontinued or reduced. Darcovet is a pain-killer. Symptoms may vary depending on the level of dependence.
  • Deafness -- Opticoacoustic nerve atrophy -- dementia: A rare genetic disorder characterized by degeneration of the optic nerve (causing impaired vision), deafness due to nerve damage and dementia due to calcification of the central nervous system. Death usually results by about the age of 40 with extensive calcification of all parts of the nervous system.
  • Decreased mental acuity: A decrease in ones perception of what is happening around them
  • Defecolagbia: Defecolagbia refers to sexual urges, preferences or fantasies involving defecating. Sexual arousal occurs during defecation.
  • Deipnophobia: An exaggerated or irrational fear of dining and dinner conversation.
  • Delirium tremens: Delirium from alcohol withdrawal
  • Delusional disorder: Persisting delusional beliefs
  • Dementia: Various mental impairment conditions.
  • Dementia With Lewy Bodies: Second most frequent cause of dementia in elderly adults.
  • Dementia, familial British: A rare, early-onset inherited form of dementia caused by deposits of amyoid substances (amyloid) and degenerative nerve changes in the brain.
  • Dementia, familial Danish: A rare inherited form of dementia caused by the deposit of abnormal substances in the brain, spinal cord and retina and the degeneration of brain tissue. Deafness and cataracts usually started in the 20's with severe deafness occurring by the age of 45. Movement problems usually started after the age of 40 with death occurring in the 5th or 6th decade.
  • Demerol overdose: Demerol is a prescription drug used to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Demerol withdrawal: Symptoms that occur when Demerol use is discontinued or reduced. Demerol is a pain-killing drug. Symptoms may vary depending on the level of dependence.
  • Demonophobia: An exaggerated or irrational fear of demons or spirits.
  • Demophobia: An exaggerated or irrational fear of crowds.
  • Dependent Personality Disorder: A personality disorder that can be characterised by an excessive need to be taken care of
  • Depersonalization disorder: A disorder where the patient suffers episodes of loss of sense of self or reality.
  • Depression: Various syndromes with excessive anxiety, phobias, or fear.
  • Depressive disorders: Depression or its various related conditions.
  • Depressive episode: Mood disorder where depression is not associated with a manic episode
  • Depressive symptoms: Inappropriate depressed mood.
  • Dermatillomania: A form of obsessive compulsive disorder where a person compulsively picks at their own skin. Sufferers can feel the pain they inflict on themselves but the feelings of gratification and stress relief prevent them from stopping. The severity and extent of damage to the skin is variable. Stress and anxiety can trigger the compulsive skin picking.
  • Dermatophagia: A form of obsessive compulsive disorder where a person compulsively bites their own skin, especially around the nails. Sufferers can feel the pain they inflict on themselves but the feelings of gratification and stress relief prevent them from stopping. The severity and extent of damage to the skin is variable. Stress and anxiety can trigger the compulsive skin biting.
  • Dermatophobia: An exaggerated or irrational fear of skin disease.
  • Dexedrine overdose: Dexedrine is a prescription drug mainly used to treat attention deficit hyperactivity disorder and narcolepsy. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Dexedrine withdrawal: Symptoms that occur when Dexedrine use is discontinued or reduced. Dexedrine is an amphetamine. Symptoms may vary depending on the level of dependence. Symptoms are usually peak during the second day and last about a week.
  • Dextrophobia: An exaggerated or irrational fear of objects on the right side of the body.
  • Diaperism: Sexual arousal from wearing nappies.
  • Diazepam overdose -- Teratogenic Agent: There is evidence to indicate that exposure to Diazepam overdose during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
  • Difficulty concentrating in children: it can occur either due to medical conditions or psychological conditions
  • Difficulty concentrating in teens: it can occur either due to medical conditions or psychological conditions
  • Difficulty concentrating in toddlers: it can occur either due to medical conditions or psychological conditions
  • Digoxin antidepressant poisoning: Excessive ingestion of digoxin antidepressant drugs.
  • Dikephobia: An exaggerated or irrational fear of justice.
  • Dilaudid overdose: Dilaudid is a prescription drug used mainly to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Dilaudid withdrawal: Symptoms that occur when Dilaudid use is discontinued or reduced. Dilaudid is a pain-killing drug. Symptoms may vary depending on the level of dependence. Symptoms are usually peak during the second day and last about a week.
  • Dinophobia: An exaggerated or irrational fear of whirlpools.
  • Diogenes syndrome: A rare condition where a person (usually an elderly person) fails to look after there personal cleanliness and hygiene. They tend to be untidy and hoard rubbish.
  • Diplopiaphobia: An exaggerated or irrational fear of double vision.
  • Dippoldism: Dippoldism refers to sexual urges, preferences or fantasies involving reprimanding or beating children.
  • Dipsophobia: An exaggerated or irrational fear of drinking.
  • Dissociative Amnesia: The sudden loss of memory
  • Dissociative Fugue: A condition characterized by sudden departure from normal residence with no memory of the past associated with confusion
  • Dissociative Identity Disorder: A neurotic mental disorder where a person's field of consciousness is limited in order to fulfill an unconscious goal. Often selective amnesia is involved and the person develops what is called multiple personalities.
  • Dissociative disorder: A sudden change in the state of consciousness and identity
  • Doleros: Doleros refers to sexual urges, preferences or fantasies involving pain.
  • Domatophobia: An exaggerated or irrational fear of being inside a house.
  • Doraphobia: An exaggerated or irrational fear of contact with animal fur or skin.
  • Double Depression: Double depression occurs when someone with dysthymia experiences an episode of major depression.
  • Down's Syndrome associated Alzheimer's disease: Early-onset Alzheimer's is more prevalent in Down's Syndrome sufferers than in the general population. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Drug abuse: Addiction to any of various illicit drugs.
  • Drug overdose: A condition characterized by the consumption in excess of a particular drug causing adverse effects
  • Dysgraphia: Difficulty with writing.
  • Dysmorphophilia: Dysmorphophilia refers to sexual urges, preferences or fantasies involving deformities in other people.
  • Dysmorphophobia: An exaggerated or irrational fear of deformity. It usually relates to deformities in other people.
  • Dysphasic dementia, hereditary: An inherited form of dementia caused by nerve degeneration.
  • Dysthymia: Mild form of depression
  • Dysthymia/seasonal depression disorder, PND:
  • Early-onset Alzheimer's: Early-onset Alzheimer's is a form of Alzheimer's disease that is linked to genetic defects or occurs in a familial pattern. It is not as common as the non-inherited form of Alzheimer's - occurs in up to 90% of Alzheimer sufferers. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
  • Eating Disorder not Otherwise Specified (ENDOS): Eating disorder that does not match a specific category.
  • Eating disorder not otherwise specified: Any eating disorder which has otherwise not been classified.
  • Eating disorders: Various mental disorders impairing normal eating or appetite.
  • Ecclesiophobia: An exaggerated or irrational fear of church.
  • Ecophobia: An exaggerated or irrational fear of home surroundings.
  • Ecouteurism: Ecouteurism refers to intentionally listening to other people having sex without them being aware of it or consenting to it.
  • Ecstasy abuse: Use of the illicit drug called ecstasy
  • Ecstasy addiction: An uncontrollable desire to use ecstasy on a regular basis. Chronic ecstasy use can lead to dependency in as little as two weeks. Ecstasy is a synthetic psychoactive drug often used as a recreational drug. Street names for the drug includes: XTC, Adam, Clarity, Lover's Speed, Hug, Beans and Love Drug. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
  • Ecstasy overdose: Ectsasy is an illegal and highly addictive recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Ecstasy withdrawal: Symptoms that occur when ecstasy use is discontinued or reduced. Symptoms may vary depending on the level of dependence.
  • Eisoptrophobia: An exaggerated or irrational fear of mirrors.
  • Elective mutism: A rare psychiatric disorder where a child chooses not to speak in a social setting even though they are capable of speaking and often do so at home.
  • Electrophilia: Electrophilia refers to sexual urges, preferences or fantasies involving an electrical stimulus.
  • Electrophobia: An exaggerated or irrational fear of electricity or receiving an electric shock.
  • Eleutherophobia: An exaggerated or irrational fear of freedom.
  • Elurophobia: An exaggerated or irrational fear of cats.
  • Emetophilia: Emetophilia refers to sexual urges, preferences or fantasies involving vomit or vomiting.
  • Emetophobia: An exaggerated or irrational fear of vomiting.
  • Emotional disorders: A disorder of emotions
  • Emotional seizure: A emotional seizure is an electrical disturbance that originates in a part of the brain involved with emotions. The resulting symptoms such as sudden inexplicable fear, anger or happiness.
  • Emotional stress: A condition which occurs when a person is under stress affecting their emotions
  • Endogenous depression: Endogenous depression is a mood disorder that affects some people from birth and is believed to be a genetic condition. A sufferer is prone to become depressed on the advent of traumatic events, exhaustion or when under high levels of stress and may not be aware of the disorder until confronted by symptoms of depression for the first time.
  • Endytophilia: Endytophilia refers to sexual urges, preferences or fantasies involving having sex with a partner who is dressed rather than undressed.
  • Enetophobia: An exaggerated or irrational fear of pins or needles.
  • Entomophilia: Entomophilia refers to sexual urges, preferences or fantasies involving insects.
  • Entomophobia: An exaggerated or irrational fear of insects.
  • Eosophobia: An exaggerated or irrational fear of the dawn.
  • Ephebophilia: A sexual preference for children in mid- to late adolescence.
  • Episodic concentration difficulty: Concentrating difficulty which occurs only during particular period of time includes
  • Eproctophilia: Eproctophiliarefers to sexual urges, preferences or fantasies involving flatulence.
  • Ereuthophobia: An exaggerated or irrational fear of blushing.
  • Ergasiophobia: An exaggerated or irrational fear of or aversion to work. The word is sometimes used to describe a surgeon's fear of operating.
  • Ergophobia: An exaggerated or irrational fear of work.
  • Erotic asphyxiaa: Sexual arousal from asphyxiation.
  • Erotic lactation: Sexual attraction to human milk or women who are lactating.
  • Erotographomania: Erotographomania refers to a strong urge to write love poetry or love letters.
  • Erotophobia: An exaggerated or irrational fear of sexual feelings. The condition is characterized by feelings of guilt and fear about sex. Sufferers dislkike talking about sex, are less likely to engage in sexual relations and have a very negative view of sexually explicit material. This term is used mostly in the field of psychology.
  • Erotophonophilia: A murder associated with lust. Usually the perpetrator has a sexual obsession with the victim. Often mutilation of sexual organs or other acts of a sexual nature are involved.
  • Erythrophobia: An exaggerated or irrational fear of blushing.
  • Euphophobia: An exaggerated or irrational fear of good news.
  • Excessive dieting: Excessive limitation of food intake can lead to problems and effects such as dizziness, depression, intestinal problems, edema and impaired growth.
  • Expressive Aprosodia: A term used to describe the impaired ability to convey emotions such as joy and anger changes in voice which results in the patient using a flat, emotionless voice. The condition results from damage to a particular part of the brain.
  • Factitious syndromes: A disorder that a person believes they have that however does not exist
  • Familial Forms of Alzheimer's Disease: Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour. Familial forms of the disease tend to run in families and are linked to mutations on various genes. Chromosome 1, 14 19 and 21 are the main chromosomes where mutations resulting in Alzheimer's are located..
  • Febriphobia: An exaggerated or irrational fear of fever.
  • Ferlini-Ragno-Calzolari syndrome: A rare syndrome reported in only a few families and characterized by skeletal problems, excessive fluid inside the skull and neurological problems.
  • Fetishism: A syndrome characterised by recurrent sexual urges for and fantasies of using fetishes
  • Flatuphilia: Flatuphilia refers to sexual arousal that results from other passing wind.
  • Fochs-LADD: A rare familial disorder characterized by brain disease, calcification in the brain, bleeding in the brain and dementia.
  • Food addiction: Food addiction refers to compulsive eating that is unrelated to actual hunger. The person feels compelled to eat even when they aren't hungry. Although it is not considered a recognised addiction it can have a significant impact on a person's life and health. Food addicts often have underlying emotional problems.
  • Food play: Sexual arousal associated with food. It may involve eating food from another person's body
  • Formicophilia: Formicophilia refers to sexual urges, preferences or fantasies involving ants or insects.
  • Frigophobia: An exaggerated or irrational fear of cold.
  • Frontotemporal dementia: A degenerative brain disease involving frontal and temporal brain lobes resulting in dementia. Degeneration of the frontal lobe causes behavioral and personality changes degeneration of the temporal lobe causes semantic dementia.
  • Frontotemporal dementia, ubiquitin-positive: A rare inherited neurodegenerative disorder characterized primarily by progressive social, behavioral and language deterioration due to changes in the frontotemporal portion of the brain.
  • Galeophobia: An exaggerated or irrational fear of sharks.
  • Gambling addiction: Addiction to gambling activities.
  • Gametophobia: An exaggerated or irrational fear of marriage.
  • Gaming addiction: Gaming addiction refers to the excessive amounts of time spent on online computer games. When the person attempts to reduce the amount of time spent on the activity they suffer withdrawal symptoms such as irritability and anxiety. The preoccupation can cause problems with relationships and even with work performance.
  • Gamophobia: An exaggerated or irrational fear of marriage.
  • Gastrophilia: Sexual arousal gained from passing gas in someone's face or having gas passed on their face.
  • Gender Identity Disorder: Mental belief that one has the incorrect gender
  • Generalised anxiety disorder: Anxiety is a feeling of apprehension or fear.
  • Generalized anxiety disorder: Excessive anxiety and worrying.
  • Geniophobia: An exaggerated or irrational fear of chins.
  • Genophobia: An exaggerated or irrational fear of sex.
  • Genuphobia: An exaggerated or irrational fear of knees.
  • Gephyrophobia: An exaggerated or irrational fear of crossing a bridge.
  • Gerascophobia: An exaggerated or irrational fear of growing old.
  • Gerontophilia: Gerontophilia refers to sexual urges, preferences or fantasies involving relatively old people.
  • Gerstmann's Syndrome: Brain defect causing various cognitive problems.
  • Geumophobia: An exaggerated or irrational fear of tastes or flavors.
  • Glossophobia: An exaggerated or irrational fear of speaking in public or speech anxiety.
  • Gomphipothic: Gomphipothic refers to sexual arousal resulting from seeing teeth.
  • Grahmann's syndrome: Abnormal development of the part of the brain called the diencephalon which in turn affects the pituitary gland. The main manifestations are impaired sexual development, obesity and periodic psychotic episodes.
  • Graphophobia: An exaggerated or irrational dislike of writing.
  • Grief or loss: The normal emotional response that occurs to an external loss
  • Guam disease: A nerve degeneration disorder that occurs particularly in Guam and involves progressive dementia and parkinsonism which ultimately leads to death.
  • Gynelophilous: Gynelophilous refers to sexual arousal from seeing or touching pubic hair.
  • Gynemimetophilia: Gynemimetophilia refers to sexual urges, preferences or fantasies involving males who impersonate females.
  • Gynephobia: An exaggerated or irrational fear or hatred of women.
  • Gynophobia: An exaggerated or irrational fear or hatred of women.
  • Hadeophobia: An exaggerated or irrational fear of hell.
  • Hagiophobia: An exaggerated or irrational fear or dislike of saints and holy things.
  • Hallucination: Incorrect perception of any of the senses.
  • Hallucinations: Incorrect perception of any of the senses.
  • Hamaphobia: An exaggerated or irrational fear of the sight of blood.
  • Hamartophobia: An exaggerated or irrational fear of error or sin.
  • Hamaxophobia: An exaggerated or irrational fear of being in a vehicle or riding in one.
  • Hand Fetishism: Fetishism is a form of paraphilia which is a condition involving intense sexual urges and fantasies usually involving a particular object. Fetishism involves a strong association between sexual pleasure or gratification and a particular object or body part is involved. Fetishism is only a problem when the person is distressed by their particular fetish or if they are unable to perform sexually unless the object of their fetish is present in some way. In hand fetishism, sexual pleasure is gained from hands or specific parts of hands.
  • Haphophobia: An exaggerated or irrational fear of touch.
  • Haptophobia: An exaggerated or irrational fear of touch.
  • Harmatophilia: Harmatophilia refers to sexual urges, arousal or fantasies involving breaking rules or making mistakes.
  • Harpaxophilia: Harpaxophilia refers to sexual urges, arousal or fantasies involving being robbed.
  • Harpaxophobia: An exaggerated or irrational fear of robbers.
  • Hebephilia: Hebephilia refers to sexual urges, preferences or fantasies involving teenagers.
  • Heckenlively syndrome: A rare syndrome characterized by eye anomalies, behavioral problems and abnormal amino acid metabolism.
  • Hedonophobia: An exaggerated or irrational fear of pleasure.
  • Heidenhain syndrome: A form of premature dementia caused by degeneration of the brain. It is considered a variant of Creutzfeldt-Jakob disease. Heidenhain syndrome is characterized mainly by eye problems whereas Creutzfeldt-Jakob predominantly involves ataxia.
  • Heliophobia: An exaggerated or irrational fear of sunlight or increased sensitivity to sunlight.
  • Helminthophobia: An exaggerated or irrational fear of being infested with worms.
  • Hematophobia: An exaggerated or irrational fear of the sight of blood.
  • Heroin dependence: The physical and psychological dependence to the recreational drug heroin
  • Heroin overdose: Heroin is an illegal and highly addictive recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
  • Heroin withdrawal: Symptoms that occur when heroin use is discontinued or reduced. Symptoms may vary depending on the level of dependence.
  • Herpetophobia: An exaggerated or irrational fear of reptiles.
  • Heterophobia: An exaggerated or irrational fear or aversion to heterosexuals.
  • Hexakosioihexekontahexaphobia: An exaggerated or irrational fear of the number 666.
  • Hierophilia: Hierophilia refers to sexual urges, preferences or fantasies involving sacred or religious objects.
  • Hierophobia: An exaggerated or irrational fear of sacred objects or priests.
  • Hippophobia: An exaggerated or irrational fear of horses.
  • Hippopotomonstrosesquippedaliophobia: An exaggerated or irrational fear of long words.
  • Histrionic Personality Disorder: Behavioral disorder seeking attention and approval
  • Hodophilia: Hodophilia refers to sexual urges, arousal or fantasies involving travelling to new or strange places.
  • Hodophobia: An exaggerated or irrational fear of travel.
  • Holiday depression: The holiday season can be a time full of joy, cheer, parties and family gatherings. But for many people, it is a time of self-evaluation, loneliness, reflection on past failures and anxiety about an uncertain future hence leading to holiday depression.

 

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