**Core Concept**
Nocturnal enuresis, particularly in children, is a neurodevelopmental disorder involving impaired bladder control during sleep. Treatment focuses on addressing underlying neurobiological mechanisms, such as reduced inhibition of bladder activity and dysregulation of the supraspinal control of micturition.

**Why the Correct Answer is Right**
Imipramine, a tricyclic antidepressant, is effective in treating nocturnal enuresis due to its action on central serotonin and norepinephrine receptors. It enhances bladder inhibition by increasing sympathetic tone and modulating the descending inhibitory pathways from the brainstem to the spinal cord. Studies show it improves dryness rates in children with enuresis, especially when used as monotherapy. Its mechanism is distinct from antipsychotics, which are not indicated for this condition.

**Why Each Wrong Option is Incorrect**
Option B: CPZ (Chlorpromazine) – A typical antipsychotic with poor efficacy and significant side effects in enuresis; it acts on dopamine receptors but lacks proven benefit and may worsen sleep or behavior.
Option C: Alprazolam – A benzodiazepine that promotes sedation and may worsen bladder control; it is not indicated for enuresis and can cause daytime drowsiness or dependency.
Option D: Haloperidol – A high-potency dopamine antagonist; it is used in psychiatric disorders, not enuresis, and may cause extrapyramidal side effects and worsen bladder function.

**Clinical Pearl / High-Yield Fact**
Imipramine remains the most effective pharmacological agent for nocturnal enuresis in children, especially when behavioral therapies fail. It is a first-line option in pediatric psychiatry and neurodevelopmental disorders.

✓ Correct Answer: A. Imipramine