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: Pathology
[{'content': 'All are Orofacial pain of vascular origin except: \nSelect and explain. \nA. Cluster headache, B. Migraine, C. MPDS, D. Chronic paroxysmal hemicrania', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The various orofacial pains of vascular origin are:\n\nCluster headache\nTemporal arteritis (involves extracranial carotid circulation)\nChronic paroxysmal hemicranias\nMigraine – (MC)', 'role': 'assistant'}]