Menstrual Headache
ICDH-II defines menstrually related migraine without aura as occurring between days -2 and +3 in at least 2 out of 3 menstrual cycles. The first day of menstruation is day 1 and the preceding day is -1; there is no day 0. It is estimated that 60 % of women migraineurs have menstrual migraine without aura.
