Delirium tremens

Delirium tremens is a severe condition that affects the brain and nervous system, usually occurring in people who suddenly stop drinking alcohol after heavy and prolonged use. It causes intense confusion, shaking, and hallucinations, which can be very frightening and dangerous. The condition involves the body's reaction to the absence of alcohol, which it has become dependent on. This leads to an overactive nervous system, causing symptoms like a fast heartbeat, sweating, and high blood pressure. Because it affects the brain's ability to function normally, it can interfere with thinking, awareness, and behavior. Delirium tremens is a medical emergency that requires immediate attention to prevent serious complications.

Delirium tremens is an acute, severe form of alcohol withdrawal syndrome characterized by autonomic hyperactivity, global cerebral dysfunction, and severe neuropsychiatric symptoms. It typically occurs 48 to 96 hours after abrupt cessation or significant reduction of chronic heavy alcohol use. The core pathology involves central nervous system hyperexcitability due to the sudden loss of alcohol's inhibitory effects on GABAergic neurotransmission and unopposed excitatory activity via NMDA receptors. Clinically, it presents with delirium, tremors, visual and tactile hallucinations, seizures, and marked sympathetic overdrive including tachycardia, hypertension, and diaphoresis. This condition carries a high risk of morbidity and mortality if untreated, making early recognition and management critical in medical practice.