Menstrual cramps

These are a discomfort or pain caused by the uterus muscle contracting. They often occur just before and during the first days of menstruation. The muscle contractions are caused by high levels of prostaglandins that relates to both hormone levels and to the tightness of the cervix. OR the discomfort caused by contraction of the uterus before and during menstrual flow because of prostaglandins. It is also called dysmenorrhea. It is treated by anti-prostaglandin agents such as ibuprofen.