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Mittelschmerz is one-sided, lower abdominal pain in women. It occurs at or around the time of an egg is released from the ovaries (ovulation).
Ovulation pain; Midcycle pain
About 1 in 5 women have pain around the time of ovulation. This is called mittelschmerz. The pain may occur just before, during, or after ovulation.
This pain can be explained in several ways. Just before to ovulation, the growth of the follicle where the egg develops may stretch the surface of the ovary. This can cause pain. At the time of ovulation, fluid or blood is released from the ruptured egg follicle. This may irritate lining of the abdomen.
Mittelschmerz may be felt on one side of the body in one month and then switch to the other side in the next month. It may also occur on the same side for many months in a row.
Symptoms include lower-abdominal pain that:
A pelvic exam shows no problems. Other tests (such as an abdominal ultrasound or transvaginal pelvic ultrasound) may be done to look for other causes of ovarian or pelvic pain. These tests may be done if the pain is ongoing.
Most of the time treatment is not needed. Pain relievers may be needed if the pain is intense or lasts a long time.
Mittelschmerz can be painful, but it is not harmful. It is not a sign of disease. It may help women be aware of the time in the menstrual cycle when the egg is released.
Most of the time there are no complications.
Call your health care provider if:
Birth control pills can be taken to prevent ovulation. This can help reduce pain that is linked to ovulation.
Won HR, Abbott J. Optimal management of chronic cyclical pelvic pain: an evidence-based and pragmatic approach. Int J Womens Health. 2010; 2: 263–277.