**Delirium Tremens (DTs) Core Concept**
Delirium tremens is a severe form of alcohol withdrawal that occurs in individuals with a history of chronic alcohol abuse. It is characterized by a sudden onset of confusion, agitation, hallucinations, and autonomic instability.

**Why the Correct Answer is Right**
Delirium tremens is caused by the abrupt cessation of alcohol consumption in individuals with a history of heavy drinking. This leads to a significant decrease in the levels of gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter, and an increase in the levels of glutamate, an excitatory neurotransmitter. The resulting imbalance in neurotransmitter activity leads to hyperarousal, agitation, and hallucinations. The autonomic instability in DTs is thought to be mediated by the release of catecholamines, such as adrenaline and noradrenaline, which stimulate the sympathetic nervous system.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option may be true, but it is not necessarily the exception. Delirium tremens typically occurs within 48-96 hours after the last drink, but the exact timing can vary.
* **Option B:** This option is true and is a characteristic of delirium tremens. The condition is often associated with a history of chronic alcohol abuse and withdrawal.
* **Option C:** This option is true and is a common feature of delirium tremens. The condition is characterized by a sudden onset of confusion, agitation, and hallucinations.
* **Option D:** This option may be true, but it is not necessarily the exception. Delirium tremens can be precipitated by a variety of factors, including sedatives, benzodiazepines, and other medications.

**Clinical Pearl / High-Yield Fact**
A key feature of delirium tremens is the presence of autonomic instability, which can manifest as hypertension, tachycardia, and sweating. This can be remembered using the mnemonic "HOTS" (Hypertension, Tachycardia, Oliguria, Sweating).

**Correct Answer: None of the above**