Correct Answer: B

Rationale: Buspirone is often chosen as a first-line treatment for generalized anxiety disorder (GAD) due to its efficacy and favorable side effect profile. Unlike benzodiazepines such as clonazepam (A), buspirone does not carry the risk of tolerance, dependence, or withdrawal symptoms, making it a preferred choice. While propranolol (C) and hydroxyzine (D) are sometimes used for anxiety, they are not typically considered first-line treatments for GAD.

Correct Answer: A

Rationale: Weight gain is a common side effect of olanzapine, an atypical antipsychotic. Olanzapine is known to cause metabolic changes that can lead to weight gain. Monitoring weight regularly is essential to detect and manage this side effect to prevent associated health risks such as diabetes and cardiovascular issues. Hypotension (choice B) is not a common side effect of olanzapine. Olanzapine is more likely to cause orthostatic hypotension, which is a sudden drop in blood pressure when changing positions. Hair loss (choice C) and hyperthyroidism (choice D) are not typically associated with olanzapine use.

Correct Answer: C

Rationale: Buspirone is different from benzodiazepines because it does not cause sedation. Unlike benzodiazepines, buspirone has a lower potential for abuse and does not cause the sedative effects commonly seen with benzodiazepines. While benzodiazepines may work immediately to relieve anxiety, buspirone may take longer to show its therapeutic effects. Additionally, buspirone is not limited to short-term treatment only, making it a preferred choice in patients where sedation is a concern or in those with a history of substance abuse.

Correct Answer: D

Rationale: Cognitive-behavioral therapy (CBT) is a widely used therapeutic approach effective in treating various mental health conditions. While CBT can be beneficial for different disorders, it is particularly well-suited for anxiety-related conditions like generalized anxiety disorder. CBT focuses on identifying and modifying negative thought patterns and behaviors contributing to anxiety, making it a suitable choice for treating generalized anxiety disorder. Therefore, the correct answer is D. Choices A, B, and C are incorrect because CBT is not typically the first-line treatment for schizophrenia, bipolar disorder, or posttraumatic stress disorder, although it may be used as a part of a comprehensive treatment plan.

Correct Answer: D

Rationale: Escitalopram, an SSRI used in treating generalized anxiety disorder, typically takes 6-8 weeks to achieve its full therapeutic effect. While some improvement may be noticed earlier, the maximum benefit is usually experienced after this timeframe. Options A, B, and C are incorrect because they underestimate the time required for escitalopram to reach its full effectiveness. Educating patients about the realistic timeline for medication effectiveness is crucial in managing expectations and ensuring adherence to the prescribed treatment.