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Deep Disease

What are common symptoms of thoracic endometriosis?

The short answer

Thoracic endometriosis symptoms include chest pain or tightness, shortness of breath, and pain in the shoulder or upper back, often flaring around your period. In some cases, a collapsed lung or fluid or blood around the lung can recur around menstruation.

Thoracic endometriosis symptoms often follow a clear menstrual pattern, with pain or breathing changes that flare around your period. Many patients describe cyclic chest pain or tightness, shortness of breath that’s noticeably worse during menstruation, and pain that can spread to the shoulder or upper back.

In some cases, thoracic endometriosis is associated with recurrent episodes of collapsed lung or fluid or blood around the lung that occur around the time of a period. Because these symptoms can mimic other chest or lung conditions, our team focuses on when symptoms occur, prior episodes, and your pelvic symptom history to guide a more targeted evaluation. If this pattern sounds familiar, reach out to schedule a consultation so we can help clarify what’s driving your symptoms and discuss next steps.

Where to go from here

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

Step 1 · Understand

Understand the condition

Step 3 · Speak with Us

Chest Pain Linked to Your Cycle?

Thoracic endometriosis causes chest tightness and breathing changes that flare with your period. Our specialists pinpoint symptoms and guide you toward relief and proper diagnosis.

Questions people ask next

All deep disease questions
  • When are thoracic symptoms an emergency?

    Sudden, severe chest pain, new or worsening shortness of breath, or faintness should be treated as an emergency, especially around your period. These symptoms can rarely reflect a lung complication linked to endometriosis and need immediate evaluation.

  • Is my chest pain cyclical and possibly endometriosis-related?

    Chest pain tends to be cyclical when it predictably flares in the same part of your menstrual cycle, and endometriosis could be contributing. Tracking timing, location and breathing-related symptoms for 2–3 cycles can make the pattern clearer.

  • Why is thoracic endometriosis hard to diagnose?

    Thoracic endometriosis can be hard to diagnose because its symptoms look like more common lung or chest problems, and imaging can appear normal between episodes. Symptoms that reliably flare around the menstrual cycle are one of the biggest clues.

  • Does thoracic endometriosis always happen with pelvic endometriosis?

    No, thoracic endometriosis does not always occur with pelvic endometriosis, although many people have both. Thoracic disease can be present even when pelvic symptoms are mild or seem improved after treatment, and a normal pelvic exam does not rule it out.

Reach Out

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.

Call Us

(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