**Question:** A 11 year-old boy is brought to the physician with a complaint that he gets up at night and while sleeping walks around the house for a few minutes before returning to bed. When parents try to wake him up, he is confused and disoriented. Which of the following is the most appropriate treatment for him?

A. Clonazepam
B. Promethazine
C. Lithium
D. Fluoxetine

**Correct Answer:** A. Clonazepam

**Core Concept**: Night-time sleepwalking or somnambulism is a parasomnia characterized by involuntary actions during sleep, including walking, talking, or even driving. It is often associated with sleep deprivation, stress, or underlying sleep disorders.

**Why the Correct Answer is Right**: Clonazepam is a benzodiazepine medication that primarily targets the GABAA receptor, promoting sedation and reducing arousal threshold. In the context of night-time sleepwalking, clonazepam helps to suppress the sleep-related motor activity by calming the central nervous system.

**Why Each Wrong Option is Incorrect**:

A. Promethazine: An antihistamine with sedative properties, it might alleviate the sleepwalking episodes but its primary action is unrelated to sleep regulation and does not address the underlying parasomnia.

B. Lithium: Typically used for bipolar disorder management, lithium does not specifically target sleepwalking episodes and may have significant side effects.

C. Fluoxetine: A selective serotonin reuptake inhibitor (SSRI) used for treating depression and anxiety, its primary action is related to mood regulation and does not address sleepwalking episodes directly.

**Clinical Pearl**: When treating sleepwalking disorders, it is essential to consider potential underlying sleep disorders, such as sleep apnea or parasomnias, which should be addressed along with any medication prescribed.

**Correct Answer Explanation**: In this case, clonazepam is the appropriate choice for treating the patient's sleepwalking episodes. Although it is essential to address the sleep disorders contributing to the sleepwalking, clonazepam provides immediate relief for the patient and reduces the frequency and severity of sleepwalking episodes.

However, it is crucial to consider the potential risks and side effects associated with benzodiazepines like clonazepam, including drowsiness, ataxia, and next-day memory impairment. Additionally, it is essential to consult with an expert and monitor the patient closely to address the underlying sleep disorders and ensure safe management of the condition.