“…In 11 studies treatment was specifically used for headache prevention [12, 29–38], in 8 studies treatment effect on headache was evaluated in women who required treatment for contraception or medical reasons [13–15, 39–43], in 2 studies it was not specifically stated if treatment was prescribed specifically for headache treatment or for other indications [44, 45]. Five studies were performed in women with MO or MA not necessarily related to menstruation [12–14, 41, 43], 10 in MRM or MM [29–39, 43, 45], 4 in PMM [29, 35, 38, 39], and 2 in women with and without headache [15, 40].…”