You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 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? and explain in detail?
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. They 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 very severe anxiety.