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: Physiology
[{'content': 'Perception of normal (non-painful) sensory stimuli, as painful is called \nSelect and explain. \nA. Hyperalgesia, B. Allodynia, C. Hyperpathia, D. Causalgia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: More pain is felt to a little painful stimulus- Hyperalgesia\n\xa0\nPain is felt to a non painful stimulus- Allodynia', 'role': 'assistant'}]