An addict presents with increased sweating, lacrimation, diarrhea, yawning and rhinorrhea. These symptoms may occur due to withdrawal of:
**Core Concept**
The addict's symptoms are indicative of opioid withdrawal, a complex physiological process involving multiple neurotransmitter systems and pathways. Opioid receptors, particularly mu-receptors, play a crucial role in mediating these symptoms.
**Why the Correct Answer is Right**
During opioid withdrawal, the depletion of endogenous opioids (such as endorphins and enkephalins) leads to an increase in the activity of the hypothalamic-pituitary-adrenal (HPA) axis, resulting in the release of stress hormones like cortisol and adrenaline. This, in turn, triggers the symptoms of withdrawal, including increased sweating, lacrimation, diarrhea, yawning, and rhinorrhea. The activation of the HPA axis and the subsequent release of stress hormones are key mechanisms underlying opioid withdrawal.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the symptoms described do not typically occur with withdrawal from benzodiazepines. While benzodiazepine withdrawal can cause anxiety and insomnia, it does not usually present with increased sweating, lacrimation, diarrhea, yawning, and rhinorrhea.
**Option B:** This option is incorrect because withdrawal from cocaine does not typically cause the specific combination of symptoms described. Cocaine withdrawal may lead to depression, fatigue, and irritability, but it does not usually involve increased sweating, lacrimation, diarrhea, yawning, and rhinorrhea.
**Option C:** This option is incorrect because withdrawal from nicotine does not typically cause the specific combination of symptoms described. Nicotine withdrawal may lead to irritability, anxiety, and difficulty concentrating, but it does not usually involve increased sweating, lacrimation, diarrhea, yawning, and rhinorrhea.
**Clinical Pearl / High-Yield Fact**
It's essential to note that opioid withdrawal can be life-threatening if left untreated, and prompt medical attention is necessary to manage symptoms and prevent complications. The use of medications like methadone or buprenorphine can help alleviate withdrawal symptoms and support recovery.
**Correct Answer:** D. Opioids.