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Deep Disease

When are thoracic symptoms an emergency?

The short answer

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.

Sudden, severe chest pain, new or worsening shortness of breath, or faintness, especially when symptoms cluster around your period, should be treated as an emergency. These symptoms can rarely reflect a lung complication linked to endometriosis, such as air or blood collecting around the lung. They need immediate evaluation rather than watchful waiting.

If you’re having repeated episodes (often right-sided) that seem to follow your menstrual cycle, that pattern is important even when symptoms settle between flares. Our team can help connect the timing and symptom history with the right imaging and multidisciplinary planning so you’re not bounced between providers. If this is happening to you, reach out to schedule a consultation so we can review your symptoms and coordinate 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 2 · Compare

Symptoms it can relate to

Step 3 · Speak with Us

Severe Chest Symptoms? Act Fast

Sudden chest pain or breathlessness around your period can signal serious endometriosis complications. Our specialists provide urgent evaluation to keep you safe and cared for.

Questions people ask next

All deep disease questions
  • Is thoracic endometriosis dangerous?

    Thoracic endometriosis can be dangerous in certain situations, especially when it leads to recurrent lung collapse or significant shortness of breath. With thorough evaluation and coordinated treatment, many patients achieve strong symptom control and fewer recurrences.

  • What are common symptoms of thoracic endometriosis?

    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.

  • Can endometriosis cause shortness of breath during your period?

    Yes, endometriosis can cause shortness of breath that worsens around your period, most often when it involves the diaphragm and, more rarely, the chest cavity. Symptoms flare before or during bleeding and ease afterward, but breathlessness can also have other causes.

  • 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.

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