A child admitted to emergency with urinary incontinence, miosis, sweating, salivation…. poisoning likely by
**Core Concept**
The clinical presentation suggests cholinergic excess, characterized by symptoms such as urinary incontinence, miosis (pupillary constriction), sweating, and salivation. This is due to the overstimulation of **acetylcholine receptors** in the body.
**Why the Correct Answer is Right**
The correct answer is related to organophosphate poisoning, which inhibits **acetylcholinesterase**, the enzyme responsible for breaking down acetylcholine. As a result, acetylcholine accumulates, causing an overstimulation of muscarinic and nicotinic receptors, leading to the observed symptoms.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it does not typically cause cholinergic excess.
**Option B:** Incorrect as it is not associated with the inhibition of acetylcholinesterase.
**Option C:** Incorrect because it does not lead to the accumulation of acetylcholine.
**Clinical Pearl / High-Yield Fact**
Organophosphate poisoning is a medical emergency that requires prompt treatment with **atropine** and **pralidoxime** to counteract the effects of acetylcholine excess and reactivating acetylcholinesterase.
**Correct Answer:** D. Organophosphate poisoning.