Although the exact cause of migraine is unknown, it is generally thought to be due to temporary changes in the chemicals (such as the levels of serotonin and CGRP [calcitonin gene-related peptide]), nerves and blood vessels in the brain.1–5
Migraine is also closely associated with hereditary factors.3 The risk of migraine is three times higher in people who have a family history of migraine than those who do not.3 Moreover, migraine is three times more common in women than in men.2,4
In approximately 76% of patients, certain triggers can lead to a migraine attack.3 These factors vary from person to person and can include3–7：
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