Migraine is a neurological syndrome characterized by altered bodily perceptions, severe headaches, and nausea. Migraine headache is a neurological condition more common to women than to men. The typical migraine headache is unilateral (affecting one half of the head) and pulsating, lasting from 4 to 72 hours; symptoms include nausea, vomiting, photophobia (increased sensitivity to light), and phonophobia (increased sensitivity to sound).

What Causes Migrain?