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Symptoms

Can endometriosis cause diarrhea only during your period?

The short answer

Yes, endometriosis can be associated with diarrhea that happens only during your period. Endometriosis-related inflammation can make period-driven bowel changes more intense, even when endometriosis is not growing into the bowel wall.

Yes, endometriosis can be associated with diarrhea that happens only during your period. Menstruation increases prostaglandins, which can speed up bowel contractions and lead to looser stools and more urgency. Endometriosis-related inflammation can make those period-driven bowel changes feel much more intense.

This pattern can occur even when endometriosis isn’t growing into the bowel wall, because pelvic inflammation and nerve irritation can still affect bowel function during your period. If your diarrhea is predictable each cycle, disruptive, or comes with significant pelvic pain, rectal pain, or painful bowel movements, our team can help you sort out whether endometriosis is a likely contributor and what next steps make sense for you.

Where to go from here

Understand it, compare it with what you're feeling, then talk it through with us.

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Diarrhea Only During Your Period?

If you notice diarrhea that occurs just during your period, it could be linked to endometriosis. Our specialists can help diagnose the cause and manage your symptoms effectively.

Questions people ask next

All symptoms questions
  • Does diarrhea mean I have bowel endometriosis?

    Not necessarily: diarrhea can occur with endometriosis due to hormone-driven changes in gut movement and pelvic inflammation, even without bowel wall involvement. Pain with bowel movements, rectal pain or pressure, bleeding or cycle-related flares raise more suspicion.

  • How is period diarrhea different from IBS?

    Period diarrhea tends to worsen before or early in your period, while IBS symptoms often fluctuate with stress, sleep disruption, and certain foods. When cycle-linked diarrhea comes with significant pelvic pain, we consider endometriosis as well as IBS.

  • Why do bowel symptoms get worse during my period?

    Bowel symptoms can worsen during your period because menstrual hormones and inflammatory chemicals can directly affect the gut. Prostaglandins rise with bleeding and can increase intestinal contractions and fluid shifts, which may feel like cramping, urgency, and looser stools.

  • Can endometriosis cause IBS-like symptoms without bowel lesions?

    Yes, endometriosis can cause IBS-like symptoms even without visible bowel lesions on imaging or at surgery. Pelvic inflammation, heightened nerve sensitivity, hormone-driven changes, and pelvic floor muscle overactivity can all contribute to bowel symptoms.

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Have a question?

Lotus Endometriosis Institute provides California-based surgical evaluation and advanced excision care for patients with suspected endometriosis, adenomyosis, complex pelvic pain, and related conditions.


Many patients contact us from outside California to learn whether traveling for in-person evaluation and possible surgery may be appropriate.

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(424) 255-1340

(805) 920-0909

Fax: (805) 935-4338

Santa Monica, CA

2121 Santa Monica Blvd, Santa Monica, CA 90404

Operating Hours

8am - 5pm
Monday - Friday

Arroyo Grande, CA

154 Traffic Way, Arroyo Grande, CA 93420