anxiety and stress: People who have a history of migraine may find that painful headaches flare up during times of increased stress and anxiety.
bad posture: How you sit may affect how you feel. Poor posture can reduce blood flow through your neck. This reduced blood flow can also potentially cause a migraine headache.
caffeine use and abuse: The stimulant can potentially trigger a migraine episode. Additionally, the high-sugar sodas or drinks that contain caffeine can trigger migraines, too.
food and drink: Salty, spicy, and aged foods (such as cured meats and cheeses) may cause CM. Artificial sweeteners found in some diet foods can also trigger CM. Monosodium glutamate (MSG) is a common food preservative that has been shown to trigger migraine headaches, too.
hormones: Both EM and CM are more common in women than men. This may be because women experience regular hormonal changes as a result of menstruation. Women also experience dramatic hormone shifts before and during menopause. Hormonal medications, including birth control, can also trigger CM.
medications: Vasodilators affect your vascular system, or blood vessels. A vascular problem can trigger a migraine or make one worse. Because vasodilators can change your blood vessels, they may trigger CM.
headache medication: If you take over-the-counter headache medication more than three days each week or more than nine days in a month to treat your migraines, you may experience rebound migraines. Your doctor can help advise regarding the best way to treat your migraines with medication.
sensory stimulation: Flashing lights, loud music, and strong odors may trigger a migraine headache episode.
sleep difficulties: Not getting routine sleep may cause bags under your eyes, but it may also cause a chronic migraine episode. On the other hand, too much sleep might also cause a migraine.
weather: Shifts in temperature, humidity, and barometric pressure can affect your migraine status.