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': 'Painful syndrome with increased reaction to a stimulus and an increased threshold; faulty identification and localization of stimulus, is called as: \nSelect and explain. \nA. Causalgia., B. Hyperpathia., C. Hyperasthesia., D. Phantom pain.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]