delirium
In medicine, a state of acute confusion in which the subject is incoherent, frenzied, and out of touch with reality. It is often accompanied by delusions or hallucinations.
Delirium may occur in feverish illness, some forms of mental illness, brain disease, and as a result of drug or alcohol intoxication. In chronic alcoholism, attacks of delirium tremens (DTs), marked by hallucinations, sweating, trembling, and anxiety, may persist for several days.
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