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
Perception of normal (non-painful) sensory stimuli, as painful is called 
Select and explain. 
A. Hyperalgesia, B. Allodynia, C. Hyperpathia, D. Causalgia
B: Allodynia
Answer: B: Allodynia 
Explanation: More pain is felt to a little painful stimulus- Hyperalgesia
 
Pain is felt to a non painful stimulus- Allodynia