Whether internal or external, anything that sets a migraine attack in motion is a trigger. Take a look at the following categories of common migraine instigators so you can track potential triggers for your headaches and steer clear of them in the future:
Environment: Weather changes, high altitude, bright lights, fluorescent lighting, strong odors
Food and drink: Alcohol, MSG, aged cheese, nitrites, skipped meals
Hormones: Menstruation, menopause, hormone replacement therapy, birth control pills
Sleep: Irregular sleep patterns, excessive or too little sleep, sleep disorders
Odds and ends: Stress, fatigue, certain prescription drugs