This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anxiety disorders stress disorders and grief, Subject name: Psychiatry
[{'content': 'A 30-year-old lady complains of sudden onset breathlessness, anxiety, palpitations and feeling of impending doom. Physical examination is normal. What is the diagnosis \nSelect and explain. \nA. Panic attack, B. Anxiety disorder, C. Conversion disorder, D. Acute psychosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Panic disorder is characterised by discrete episodes of acute anxiety. The onset is usually in the early third decade with often a chronic course.The panic attacks occur recurrently every few days.there may or may not have any underlying generalised anxiety disorder. The episode is usually sudden in onset, lasts for a few minutes and is characterised by a very severe anxiety. (Ref: a sho textbook of psychiatry, Niraj Ahuja, 7th edition, pg no.90)', 'role': 'assistant'}]