This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Physiology of Pain, Subject name: Physiology
[{'content': 'Non - noxious stimuli perceived as pain is termed as: \nSelect and explain. \nA. Allodynia, B. Hyperalgesia, C. Hyperesthesia, D. Hyperpathia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Terminology Sensory disturbance Allodynia Situation in which a non - painful stimulus, once perceived, in experienced as painful, even excruciating. An example is elicitation of a painful sensation by application of a vibrating tuning fork. Hyperalgesia Severe pain in response to a mildly noxious stimulus Hyperpathia Threshold for a sensory stimulus is increased and perception is delayed, but once felt, it is unduly painful. Broad term encompasses all the phenomena described by hyperesthesia, allodynia, and hyperalgesia.', 'role': 'assistant'}]