**Question:** All are true of Delerium tremens EXCEPT:

A. Hyperthermia
B. Respiratory depression
C. Altered mental status
D. Diuretic effect

**Core Concept:**

Delerium tremens is a severe withdrawal syndrome that occurs in patients who have been dependent on alcohol for an extended period. It is characterized by a range of symptoms, including hyperthermia, respiratory depression, altered mental status, and diuretic effect. The diuretic effect is a misconception, as delirium tremens is primarily a neurological disorder rather than a fluid-electrolyte imbalance-related issue.

**Why the Correct Answer is Right:**

D. Diuretic effect is incorrect because delirium tremens (DTs) primarily results from neurological dysfunction secondary to alcohol withdrawal. Alcohol is a potent inhibitor of the central nervous system (CNS) and its withdrawal leads to a cascade of events affecting the CNS, causing symptoms like tremors, hallucinations, and hyperthermia. The diuretic effect is a misconception, as the primary concern in DTs is the neurological dysfunction rather than a change in fluid balance or diuretic response.

**Why Each Wrong Option is Incorrect:**

A. Hyperthermia is a significant feature of DTs reflecting the heightened sympathetic activity and autonomic dysregulation that occurs in this condition.
B. Respiratory depression is another common feature of DTs due to the influence of alcohol on respiratory centers in the brainstem.
C. Altered mental status is a hallmark of delirium tremens, including confusion, agitation, and hallucinations.

**Clinical Pearl:**

Understanding the correct pharmacodynamics of alcohol withdrawal syndromes like delirium tremens is crucial for healthcare providers treating alcohol-dependent patients. Recognizing the neurological features of these syndromes helps in early diagnosis and appropriate management, which can significantly improve patient outcomes.