There are many women who experience lumbago when they have their period. The causes of lumbago are as follows: First, the pelvic cavity is congested during menstruation, and congestion can easily lead to lumbago and abdominal pain. Secondly, the release of prostaglandins in women’s bodies is increased during menstruation, and the change in hormone levels can also cause pain. Third, during the menstrual period, if women do not rest well, excessive exertion will also increase lumbago. Fourth, inflammation in the pelvic area can also cause lumbago. Fifth, some women have lumbago, in addition to considering the impact of menstrual physiological changes, but also need to consider may be originally have lumbar muscle strain or disc protrusion, so the symptoms are particularly serious recommended also do lumbar spine examination.