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': "Conditions with similar pain to trigeminal neuralgia are all except: \nSelect and explain. \nA. Trotter's syndrome., B. Post-herpetic neuralgia., C. Reader's syndrome., D. None.", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]