When do migraines occur?

Many migraine attacks occur in the evening or at night and, ironically, may be the result of the body's attempt to relax after the day's stresses. Blood vessels tighten in response to stress and widen during relaxation, and dilated blood vessels in the head are a chief trigger for migraine pain. What's more, relaxation lowers an individual's pain threshold. Thus, an evening or nighttime migraine usually occurs after a particularly intense day or a period of prolonged stress.

Both the frequency and the duration of migraine headaches vary from person to person. Migraine headaches usually last at least six hours, and usually no longer than 24 hours. On occasion, however, they can persist for days, especially in women who have these headaches before or during menstruation.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.