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': 'Lithium is not used in treatment of which of the following? \nSelect and explain. \nA. Major depression, B. Vascular headache, C. Neutropenia, D. Generalized anxiety disorder', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Generalized anxiety disorder', 'role': 'assistant'}]