What Causes Headaches

Trigger Category	Potential Trigger Examples
Diet	Skipping meals Fasting Specific foods Food preservatives (e.g., nitrates, MSG) Alcohol and red wine Coffee, tea, and cola Artificial sweeteners Excess sugar
Sleep	Changes in sleep patterns Oversleeping Sleeping too little Napping
Hormonal changes	Menstrual cycle
Weather	Weather and temperature changes Barometric pressure changes
Lighting	Bright or glaring lights Flashing lights or screens
Odors and pollution	Smoke or smog Chemical odors Perfumes and fragrances
Stress and emotions	High or accumulated stress Anxiety, depression, or grief Stress letdown on weekends, vacation, or after ending a stressful project
Physical factors	Physical overexertion Exercising in the heat Becoming overtired Eyestrain

Certain triggers may increase your risk of a migraine attack. While triggers do not directly cause migraines, they are thought to activate abnormal brain activity in people who are prone to get migraine headaches.


http://www.excedrin.com/migraine/what-is-a-migraine/triggers.shtml?utm_source=Google&utm_medium=cpc&utm_term=causes%252Bof%252Bmigraines&utm_campaign=Novartis_Excedrin_Migraine_%252BConditions&gclid=CNP7-IWHlqwCFawZQgodDlhV-Q


Whitney Haecker p.6