However, there are some common features of migraine headache. The pain tends not to be continuous and is often more severe on one side of the head. It may be associated with nausea and vomiting, but rarely with more serious complications. Migraine may occur with a sudden increase or decrease in stress level and can be closely associated with one's diet. Red wine, cheese and chocolate can trigger migraines.
Diseases are the least common cause of headache.
Headaches caused by eye disease are usually felt within the eye or in the brow on the side where the disease occurs. Frequently these headaches are associated with some other symptom, such as blurred vision, haloes around lights, or extreme sensitivity to light. Headaches may be caused by disease of the ears, sinuses, teeth, jaw joints, or facial nerves. High blood pressure can rarely induce a headache. Headache caused by a brain tumor is, fortunately, quite uncommon.