The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 28-year-old male presents with a recent onset of upsetting dreams, anxiety, and disturbing flashbacks. The patient reports that he returned from active duty in Iraq 3 months ago and was adjusting to life back at home until about 7 weeks ago when he began having intense fear of loud noises and seeing sudden flashbacks to bombing attacks he endured during his time in Iraq. He had to take a leave from his army instructor duties as he was not able to handle the familiar settings of practice shooting ranges and sudden loud explosions during battalion training. After refusing to leave his house, he was finally persuaded by his wife to visit your clinic. What is the most likely diagnosis?   (A) Acute stress disorder   (B) Performance anxiety   (C) Posttraumatic stress disorder   (D) Panic attack
['(C) Posttraumatic stress disorder <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Acute stress disorder \n (B) Performance anxiety \n (C) Posttraumatic stress disorder \n (D) Panic attack <> possible answers', '  A 28-year-old male presents with a recent onset of upsetting dreams, anxiety, and disturbing flashbacks. The patient reports that he returned from active duty in Iraq 3 months ago and was adjusting to life back at home until about 7 weeks ago when he began having intense fear of loud noises and seeing sudden flashbacks to bombing attacks he endured during his time in Iraq. He had to take a leave from his army instructor duties as he was not able to handle the familiar settings of practice shooting ranges and sudden loud explosions during battalion training. After refusing to leave his house, he was finally persuaded by his wife to visit your clinic. What is the most likely diagnosis? <> context@']