It’s not all in your head. Migraines may be invisible, but they are very real: According to estimates by the Migraine Research Foundation, one billion people worldwide experience them. And of the roughly 39 million Americans who are sufferers, 28 million are women — a quarter of whom experience four or more severe attacks per month. Studies indicate that this might best be explained by the fluctuation of hormone levels during the menstrual cycle and throughout one’s lifetime. 

Migraines can be incapacitating, but these three women have found ways to turn their pain into strength.

Read the full article at allure.com