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': "Blood of 45 yrs old male shows -HVA. This patient is most likely to show - \nSelect and explain. \nA. PCC, B. Schizophrenia, C. Depression, D. Parkinson's ds", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Some guides have given Schizophrenia as the answers. But they are wrong. Read below : -\nHomovanillic acid (HVA) is the major metabolite of dopamine.\nSchizophrenia is characterized by hyperactivity of dopaminergic system. However, HVA is not raised in Schizophrenia → Which questioned the dopamine hypothesis of schizophrenia.\nDopamine is decreased in parkinsonism →HVA level is decreased.\nThough dopamine is decreased in depression, dopamine and HVA are raised in psychotic depression: -"Elevated levels of HVA have been reported in psychotic depression, suggesting increased dopamine activity\xa0in this subtype of depression"\n\nImidazole acetic acid', 'role': 'assistant'}]