Thirty-six million Americans suffer from migraine. Eighteen percent of women and 6% of men have episodic migraine. One point five percent of women and 0.5% of men have chronic migraine. Prevalence of chronic migraine peaks during midlife, 10 years later than episodic migraine, and is highest is women and in households with low income levels. Prevalence of chronic migraine is 1% to 3%.
The World Health Organization rates migraine the fourth most disabling medical disorder among women and the seventh most disabling medical disorder overall worldwide. More than half of people with chronic migraine and a quarter of those with episodic migraine missed more than 5 days of household work over 3 months. One in 3 with chronic migraine is depressed.