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': 'In a patient who is an alcoholic, which of the following causes delirium tremens? \nSelect and explain. \nA. Small consumption of alcohol, B. Gradual withdrawal from alcohol, C. Fatty liver, D. Acute infection', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: D. Acute infectionThe essential feature of the syndrome is delirium occurring within 1 week after a person stops drinking or reduces intake of alcohol.Physical illness (Eg: hepatitis or pancreatitis) predisposes to the syndrome.', 'role': 'assistant'}]