plural of delirium

(medicine) A temporary mental state with a sudden onset, usually reversible, including symptoms of confusion, inability to concentrate, disorientation, anxiety, and sometimes hallucinations. Causes can include dehydration, drug intoxication, and severe infection.

(medicine, psychology, psychiatry) A state of agitation or confusion, especially in elderly patients suffering from Alzheimer's disease or other forms of dementia, which begins daily at nightfall and which is alleviated by daylight.

(pathology) A psychosis of chronic alcoholism, usually due to alcohol withdrawal, which can be fatal. Symptoms include sweating, tremors, terrifying hallucinations, insomnia, restlessness, disorientation and anxiety.

Synonym of excited delirium

A syndrome of psychomotor agitation with delirium and sweating, typically diagnosed post-mortem after dying while being detained by police.