**Question:** True about delirium tremens - a) Clouding of consciousness, b) Coarse tremors, c) Chronic delirious behaviour, d) Hallucination, e) Autonomic dysfunction

**Core Concept:** Delirium tremens (DTs) is a severe form of withdrawal syndrome that occurs in individuals with a history of chronic alcohol abuse, particularly when they abruptly stop consuming alcohol. It is characterized by acute onset and typically resolves within a week to ten days with appropriate treatment.

**Why the Correct Answer is Right:**

1. **Clouding of consciousness (Option A):** DTs can present with clouding of consciousness, indicating a severe form of alcohol withdrawal. This is due to the impact of alcohol on the central nervous system, particularly affecting the thalamus and cerebral cortex.
2. **Coarse tremors (Option B):** Coarse tremors are a prominent feature of DTs, reflecting the effects of alcohol on the cerebellum and basal ganglia. The neurotransmitter imbalances caused by alcohol withdrawal lead to involuntary muscle contractions, resulting in coarse tremors.
3. **Chronic delirious behaviour (Option C):** While DTs can be associated with delirious behaviour, the correct answer is not specific to DTs. Delirium can manifest in a variety of conditions, making this option too broad.
4. **Hallucinations (Option D):** Hallucinations can occur in DTs, but they are not exclusive to this condition. Alcohol withdrawal can lead to visual, auditory, or tactile hallucinations.
5. **Autonomic dysfunction (Option E):** Autonomic dysfunction is a key feature of DTs, resulting from the impact of alcohol withdrawal on the autonomic nervous system. This can lead to tachycardia, hypertension, hyperthermia, and tachypnea, which are life-threatening complications.

**Why Each Wrong Option is Incorrect:**

1. **Chronic delirious behaviour (Option C):** This option is too broad and does not specifically pertain to DTs. Delirium is a symptom that can be observed in various neurological and medical conditions, making it an unsuitable answer.
2. **Hallucinations (Option D):** Although hallucinations can occur in DTs, they are not exclusive to this condition. Alcohol withdrawal can lead to visual, auditory, or tactile hallucinations.
3. **Chronic delirious behaviour (Option C):** As explained above, this answer is too broad and does not specifically relate to DTs. Delirium can be observed in various neurological and medical conditions, making it an unsuitable answer.
4. **Hallucinations (Option D):** This answer is similar to Option D, highlighting the fact that alcohol withdrawal can lead to visual, auditory, or tactile hallucinations, but is not specific to DTs.
5. **Autonomic dysfunction (Option E):** This answer highlights a key feature of DTs, resulting from the impact of alcohol withdrawal on the autonomic nervous system. This can lead to life-threatening complications such as tachycardia, hypertension, hyperthermia, and