Endometriosis occurs when the tissue that lines the uterus is found outside the uterine wall, typically on the ovaries, fallopian tubes or ligaments around the uterus. The condition is chronic and causes abdominal pain, but symptoms can usually be treated with medication.
Over-the-counter and prescription pain relievers — including ibuprofen, aspirin and acetaminophen — can help, the Endometriosis Association says. Oral contraceptives and other hormonal treatments can prevent ovulation, further reducing pain.
Surgery is another option in some cases, either to remove or destroy the extra tissue outside the uterus. In severe cases, a hysterectomy may be performed.