The diagnosis of a menstrual migraine is made by keeping track of when the migraines occur for a period of at least three months. Menstrually related migraine attacks occur usually between 2 days before and 3 days after the start of menstruation in at least 2 out of 3 menstrual cycles (periods) in a row. Pure menstrual migraine and menstrually related migraine are both migraines without auras with one exceptionnally rare case with aura reported in 2012.