Anything can trigger a migraine

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Migraine triggers
Whatever the exact mechanism of the headaches, a number of things may trigger them. Common migraine triggers include:

• Hormonal changes in women. Fluctuations in estrogen seem to trigger headaches in many women with known migraines. Women with a history of migraines often report headaches immediately before or during their periods, when they have a major drop in estrogen. Others have an increased tendency to develop migraines during pregnancy or menopause. Hormonal medications — such as oral contraceptives and hormone replacement therapy — also may worsen migraines, though some women find it’s beneficial to take them.
• Foods. Some migraines appear to be triggered by certain foods. Common offenders include alcohol, especially beer and red wine; aged cheeses; chocolate; aspartame; overuse of caffeine; monosodium glutamate — a key ingredient in some Asian foods; salty foods; and processed foods. Skipping meals or fasting also can trigger migraines.
• Stress. Stress at work or home can instigate migraines.
• Sensory stimuli. Bright lights and sun glare can produce migraines, as can loud sounds. Unusual smells — including pleasant scents, such as perfume, and unpleasant odors, such as paint thinner and secondhand smoke, can also trigger migraines.
• Changes in wake-sleep pattern. Either missing sleep or getting too much sleep may serve as a trigger for migraine attacks in some individuals, as can jet lag.
• Physical factors. Intense physical exertion, including sexual activity, may provoke migraines.
• Changes in the environment. A change of weather or barometric pressure can prompt a migraine.
• Medications. Certain medications can aggravate migraines.

Poor posture and the resulting strain on back and neck muscles can also trigger migraines.