**Question:** Opiate withdrawal is treated with -

A. Chlorpheniramine and promethazine
B. Benzodiazepines
C. Clonidine
D. Morphine

**Core Concept:**

Opiate withdrawal is a set of symptoms that occur when an individual dependent on opioids, such as morphine, heroin, or prescribed painkillers, attempts to stop or significantly reduce their intake. Common symptoms include restlessness, anxiety, insomnia, diarrhoea, yawning, and tearing. Opiate withdrawal is managed to alleviate these symptoms and support the patient's recovery.

**Why the Correct Answer is Right:**

**Clonidine** is a sympatholytic agent that works by reducing sympathetic activity, which helps manage the symptoms of opiate withdrawal, particularly the autonomic symptoms like tearing, yawning, and diarrhoea. The choice of clonidine is due to its effectiveness in reducing symptoms and its minimal risk of respiratory depression, which is a concern with benzodiazepines and opiates.

**Why Each Wrong Option is Incorrect:**

**A. Chlorpheniramine and promethazine**: These are second-generation antihistamines used to treat allergy symptoms. While they might provide some relief from autonomic symptoms like tearing, yawning, and diarrhoea, they do not address the other core symptoms of opiate withdrawal and may even exacerbate them due to their sedative effects.

**B. Benzodiazepines**: These are a class of drugs used for their anxiolytic, sedative, and muscle relaxant properties. While benzodiazepines may alleviate anxiety, they carry a significant risk of respiratory depression, which is a major concern in opiate withdrawal management.

**D. Morphine**: Morphine is an opioid, not a treatment for opiate withdrawal. Administering morphine would exacerbate the withdrawal symptoms instead of alleviating them.

**Clinical Pearl:**

Clonidine is a recommended first-line treatment for opiate withdrawal due to its efficacy in managing both autonomic and non-autonomic symptoms, and its minimal risk of respiratory depression. However, it is essential to closely monitor patients on clonidine therapy for potential adverse effects like hypotension, dry mouth, and sedation.