Anxiety, OCD & Stress-related MCQs

Psychiatry · 6 free questions with answers & explanations.

1. A 28-year-old woman presents with recurrent, unwanted thoughts about accidentally leaving her gas stove on, which she finds deeply distressing and ego-dystonic. To neutralize the anxiety, she checks the stove 15–20 times before leaving home, a ritual that consumes over 2 hours each morning. She recognizes the thoughts as excessive but cannot resist the urge to check. What is the most likely diagnosis?
2. A 32-year-old man who survived a building collapse 6 months ago presents with flashbacks of the event, nightmares, emotional numbness, avoidance of construction sites, and exaggerated startle response. He reports feeling detached from others and is unable to experience positive emotions. He has not been able to return to work. What is the first-line pharmacotherapy for this condition?
3. A 24-year-old medical student reports experiencing episodes of intense fear lasting 10–15 minutes, associated with palpitations, chest tightness, shortness of breath, dizziness, and a fear of dying. These episodes occur without warning and have happened 4 times in the past month. Between episodes she persistently worries about having another attack and has started avoiding crowded public transport. Cardiac and thyroid workup is normal. What is the most appropriate first-line treatment?
4. A 16-year-old girl refuses to attend school, avoids eating in the cafeteria, and will not participate in class presentations due to intense fear of embarrassment and negative evaluation by peers. She feels physically ill before any social event. These symptoms have been present for over a year and are significantly impairing her academics and friendships. She has no mood disorder or psychosis. What is the most likely diagnosis?
5. A 40-year-old businessman presents with excessive, uncontrollable worry about multiple domains — finances, health, family, and work performance — occurring more days than not for the past 18 months. He reports muscle tension, restlessness, difficulty concentrating, irritability, and sleep-onset insomnia. He has tried relaxation techniques without benefit. Physical examination and routine labs are normal. Which medication is specifically approved for this disorder and has a non-addictive profile?
6. A 25-year-old woman is preoccupied with the belief that a small, barely noticeable scar on her chin is grotesquely disfiguring. She spends 3–4 hours daily examining it in mirrors, frequently seeks reassurance from family, and has withdrawn from social activities. She has seen three dermatologists who found no significant abnormality. She acknowledges others do not seem to notice the scar but remains convinced it is hideous. What is the most appropriate first-line pharmacotherapy?