Final answer:
Allodynia is the sensation of pain to a stimulus that should not normally bring on pain.
Step-by-step explanation:
Allodynia is the sensation of pain in response to a stimulus that should not normally cause pain. It is a condition where non-painful stimuli are perceived as painful. For example, a light touch or a gentle brush against the skin may be experienced as intense pain. Allodynia can be caused by various factors such as nerve damage, migraines, fibromyalgia, and certain medical conditions.