How is cyclic pain characterized in endometriosis?

Updated: May 10, 2021
  • Author: G Willy Davila, MD; Chief Editor: Michel E Rivlin, MD  more...
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Cyclic pain is pain that accompanies bleeding at the time of menstruation. This could involve the bladder (hematuria), bowel (hematochezia and painful defecation), or, rarely, bleeding at uncommon sites such as the umbilicus, abdominal wall, or perineum. Occasionally, patients present with a cyclically painful expanding mass in a pelvic surgery scar; excision reveals a focus of endometriosis. In one large case series, the average onset of cyclic or noncyclic pain was 2.9 years after menarche.

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