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: Psychiatry
[{'content': 'Formication is seen with ? \nSelect and explain. \nA. Acute amphetamine intoxication, B. Chronic use of amhetamine, C. Alcohol withdrawal, D. Cannabis poisoning', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. B. Chronic use of amhetamineMagnan's syndrome (also called formication) is seen in chronic cocaine and chronic amphetamine abuse.", 'role': 'assistant'}]