What is Migraine?
Migraine is a type of recurring headache that involves blood vessels, nerves, and brain chemicals. Sensations such as visual changes, called auras, may precede a migraine.
The International Headache Society developed a system that classifies migraines as one of two types: migraine occurring with an aura (formerly called "classic") and migraine occurring without an aura (formerly called "common"). Patients may experience a migraine several times a week or once every couple of years. Migraines may be so severe that they interfere with a patient's ability to work and carry on normal activities.