During an initial assessment of a client suspected of having panic disorder, the nurse should inquire about their consumption of which substance?

In the context of an initial assessment for a client suspected of having panic disorder, it is particularly important to inquire about caffeine consumption. Caffeine is a central nervous system stimulant that can exacerbate anxiety symptoms, leading to increased heart rate, restlessness, and feelings of panic. For individuals already predisposed to panic attacks or anxiety, caffeine can trigger or intensify these episodes, making it a significant factor to consider in assessing mental health.

While other substances like alcohol, tobacco products, and illicit drugs can also impact anxiety levels and overall mental health, caffeine's direct stimulant effects are especially relevant in the context of panic disorder. Monitoring caffeine intake provides critical information that can help guide treatment and management strategies for the client.