Delirium

Encyclopedia of Psychology, Apr 06, 2001

Delirious behavior ranges from mildly inappropriate to maniacal, and is a symptom of a number of disorders. Delirium has been classified into several varieties, based primarily on causal factors. As an example, alcohol-withdrawal delirium, which is also called delirium tremens or D.T.s (because of the characteristic tremor), is an acute delirium related to physical deterioration and the abrupt lowering of blood alcohol levels upon cessation of alcohol intake after a period of abuse.

Delirium is believed to be caused by a chemical imbalance in the brain, which, in turn, may be caused by fever, drugs, head injury, disease, malnutrition, or other factors. The onset of delirium is usually fairly rapid, although the condition sometimes develops slowly, especially if a metabolic disorder is involved. Typically, delirium disappears soon after the underlying cause is successfully treated. Occasionally, however, recovery from delirium is limited by neurological or other damage.

Gale Encyclopedia of Psychology, 2nd ed. Gale Group, 2001.
 

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