Korsakoff’s psychosis Health Dictionary

One of a group of mental disorders in which the affected person loses contact with reality. Thought processes are so disturbed that the person does not always realise that he or she is ill. Symptoms include DELUSIONS, HALLUCINATIONS, loss of emotion, MANIA, DEPRESSION, poverty of thought and seriously abnormal behaviour. Psychoses include SCHIZOPHRENIA, MANIC DEPRESSION and organically based mental disorders. (See also MENTAL ILLNESS.)... psychosis

A form of mental disturbance occurring in chronic alcoholism and other toxic states, such as URAEMIA, lead poisoning and cerebral SYPHILIS. Its special features are talkativeness with delusions in regard to time and place – the patient, although clear in other matters, imagining that he or she has recently made journeys.... korsakoff’s syndrome

An uncommon brain disorder almost always related to malnutrition occurring in chronic alcohol dependence, but occasionally due to that which occurs in other conditions, such as cancer. Wernicke–Korsakoff syndrome is caused by deficiency of thiamine (see vitamin B complex), which affects the brain and nervous system.The disease consists of 2 stages: Wernicke’s encephalopathy and Korsakoff’s psychosis. Wernicke’s encephalopathy usually develops suddenly and produces nystagmus (abnormal, jerky eye movements), ataxia (difficulty in coordinating body movements), slowness, and confusion. Sufferers usually have signs of neuropathy, such as loss of sensation, pins-and-needles, or impaired reflexes. The level of consciousness falls progressively and may lead to coma and death unless treated. The condition is a medical emergency. Treatment with high doses of intravenous thiamine often reverses most of the symptoms, sometimes within a few hours.

Korsakoff’s psychosis may follow Wernicke’s encephalopathy if treatment is not begun promptly enough. Symptoms consist of severe amnesia, apathy, and disorientation. Korsakoff’s psychosis is usually irreversible.... wernicke–korsakoff syndrome

an organic disorder affecting the brain that results in a memory defect in which new information fails to be learnt although events from the past are still recalled; *disorientation in time and place; and a tendency to unintentionally invent material to fill memory blanks (see confabulation). The commonest cause of the condition is untreated *Wernicke’s encephalopathy in the context of alcoholism. Large doses of thiamine are given as treatment. The condition often becomes chronic. [S. S. Korsakoff (1854–1900), Russian neurologist]... korsakoff’s syndrome

a *psychosis that is triggered by childbirth and usually arises in the first two weeks after giving birth. It affects 1 in 200 women; those suffering from bipolar affective disorder or schizophrenia or those who have a history of puerperal psychosis are at particularly high risk. The symptoms develop very rapidly and the patient needs to be hospitalized, ideally in a mother and baby psychiatric unit to avoid separation; most patients respond well to *antipsychotic medication.... puerperal psychosis

a delusion of having been transformed into a windigo, a mythical monster that eats human flesh. It is often quoted as an example of a culture-specific syndrome (confined to certain North American Indian tribes).... windigo psychosis