Get to know endometriosis, the cause of abnormal menstrual pain – Pain menstruation or abnormal menstruation to trigger unbearable pain could be caused by endometriosis. Endometriosis is the tissue that forms the lining of the uterus, which also grows outside the uterus. This condition can grow on other organs in the pelvis or abdomen, and can cause bleeding, infection, and pelvic pain. Obstetrics and … Read more