This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Immediately after eating, a man develops swelling of face and lips, respiratory distress, intense pruiritis, hypotension and feeling of impending doom. The most likely diagnosis is – \nSelect and explain. \nA. Angioneurotic edema, B. Anaphylaxis, C. Myocardial infarction, D. Food stuck in throat', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This patient has :-\n\n\nSwelling of face & lip\xa0\xa0\xa0\xa0→ can occur in both anaphylaxis or locally as angioneurotic edema.\nRespiratory distress\xa0→ can occur in both anaphylaxis or angioneurotic edema.\nIntense pruritis\xa0\xa0\xa0 → Occurs in anaphylaxis but not in angioneurotic edema.\nHypotension\xa0\xa0→ Occurs in anaphylaxis but not in angioneurotic edema.\n\n\nSo, the diagnosis is anaphylaxis.', 'role': 'assistant'}]