What Is Migraine?
Migraine is a disorder characterized by repeated attacks of severe headache. A migraine headache causes throbbing or pulsating pain, usually on only one side of the head. These headaches are often associated with nausea, vomiting, and extreme sensitivity to light and sound; they generally last between four hours and three days. Migraine headaches, which are often misdiagnosed as sinus or tension headaches, are severe enough to interfere with sleep, work, and other everyday activities. They may occur as often as several times per week or as rarely as once or twice a year.