MORE THAN 10 MILLION Americans have migraines creating a burden of mostly unnecessary suffering. These severe, nearly disabling headaches can occur anywhere from once a year to three to four times a week. They can last from hours to days. They are often associated with an aura, light sensitivity, nausea, vomiting, and severe throbbing pain on one or both sides of the head. Migraines are even associated with stroke-like symptoms or paralysis in some cases.