Migraines are intense headaches that generally cause pain around the front of the head, around the temples, or behind one eye or ear. The pain is severe -- lasting as long as a few hours or up to two days. The exact cause or causes of migraines are unknown, but some common triggers include stress, lack of sleep, and certain foods. Although there is no cure, treatment options are available. These treatment options can include lifestyle changes, medications, and alternative therapies (such as biofeedback or acupuncture).