To figure out what causes your migraines, print the list below. Then check for triggers at the first signs of a headache. Review the list every few weeks or months to see if you can spot a pattern. Chances are, the items that get the most checks are your triggers.
If you feel a dull, steady pain that feels like a band tightening around your head, you may have a tension headache.
If you feel throbbing that begins on one side and causes nausea or sound/light sensitivity, you may have a migraine. Visual disturbances, such as flickering points of light, may precede a migraine headache.
If you feel a severe pain around one red, watery eye, with nasal congestion on that side of your face, you may have a cluster headache.
If you feel a steady pain in the area...
American Headache Society: "Headache Hygiene Tips."
The International Headache Society: "Epidemiology of Headache."
The Migraine Trust: "Your Triggers."
National Headache Foundation: "Migraine."