Hormonal changes in women such as before or during menstrual periods, menopause, etc
Hormonal medications, such as oral contraceptives and hormone replacement therapy
Drinks that include alcohol, especially wine, and too much caffeine, such as coffee
Stress of any type
Sensory stimuli like bright lights and strong sunlight can induce migraines. Loud sound and strong smell including perfume, paint thinner, can trigger migraine
Sleep changes like less sleep or too much sleep
Intense physical exertion
Weather changes
Foods like aged cheese and salty and processed foods
Skipping meals or fasting
Food additives like sweetener aspartame and the preservative monosodium glutamate (MSG), etc.