What Is Stage 4 Endometriosis?

What Is Stage 4 Endometriosis?
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Stage 4 endometriosis is the final and most severe stage of this chronic condition. In stage 4, uterine tissue grows in many places throughout the body. Extensive adhesions are present, where scar tissue fuses organs together, such as the uterus and rectum or the ovaries and fallopian tubes.

Endometriosis isn’t life threatening, but it can cause serious complications. Although endometriosis has no cure, treatments can slow the spread and help people manage pain.

Signs and Symptoms of Stage 4 Endometriosis

Pain and infertility are the most common symptoms of all endometriosis stages, but additional symptoms can vary.

Your endometriosis stage doesn’t always correlate with your symptoms. Some people with stage 4 may have no symptoms, while others in stage 1 may report many.

Other symptoms of stage 4 endometriosis include:

Graphic titled, stage 4 endometriosis signs and symptoms. Illustrated points include extremely painful period cramps, fatigue, infertility, very heavy periods, spotting or bleeding between periods, lower abdominal pain, painful sex, bloating or nausea

The signs and symptoms of endometriosis can vary, and they don’t always correlate with the stage. Some people with stage 4 endometriosis may have few or no symptoms, while others have many.

Everyday Health

Causes and Risk Factors of Stage 4 Endometriosis

Experts don’t know for sure what causes endometriosis at any stage. But the causes and risk factors may center on genetic, biological, and environmental elements. Experts think that the same triggers of early endometriosis may also lead to its progression to stage 4. These causes include:

  • Retrograde menstruation: This is when menstrual blood, including endometrial tissue, flows backward into the fallopian tubes instead of out of the body.
  • More exposure to estrogen: This may be from early menstruation or short periods.
  • Immune system dysfunction: The immune system might fail to prompt the body to remove endometrial tissue that is growing outside the uterus.
  • An overactive inflammatory response: This happens when the immune system reacts to endometrial implants outside the uterus.
  • Direct transplantation: This is when endometrial cells attach to other areas of the body after a surgery, such as a C-section.
Risk factors for stage 4 endometriosis include:

  • Age (25 to 50)
  • Genetics or a family history of endometriosis
  • Not having had children
  • A diet high in red meat and trans fats
  • Menstruation issues, such as short cycles, heavier flows, or longer periods
  • Getting your first period before age 11

How Is Stage 4 Endometriosis Diagnosed?

To diagnose stage 4 endometriosis, your provider must evaluate your symptoms and perform tests. Endometriosis is staged based on factors like:

  • Amount of deep and superficial implants
  • Number and severity of adhesions
  • Presence of chocolate cysts in the ovaries (growths filled with old blood)
Your provider will use one or more of the following to diagnose stage 4 endometriosis:

  • Pelvic exam: Your provider feels for large growths or scars behind your uterus.
  • Ultrasound: This imaging test, done with a vaginal wand or device placed on your stomach, uses sound waves to create a picture of your organs.
  • MRI: Magnetic resonance imaging, or MRI, takes a more detailed picture of your body’s insides.
  • Laparoscopy: To perform a laparoscopy, a surgeon makes two or three small incisions in your abdomen and inserts a camera to look for lesions and implants. During surgery, they may take small samples of suspicious tissue to check in the lab.
If your provider doesn’t find evidence of endometriosis using these exams and tests, they may prescribe hormonal birth control and medication that blocks the menstrual cycle and lowers estrogen. If your pain improves on this medicine, it suggests that you have endometriosis.

Endometriosis Staging

With endometriosis, areas of uterine tissue (endometrial) growth, called “lesions,” “implants,” or “nodules,” are typically found near the uterus.

The American Society for Reproductive Medicine (ASRM) divides endometriosis into four stages, with stage 1 being mild and stage 4 being severe. The ASRM bases staging results on the location and size of implants and lesions, along with damage to nearby organs.

Since people don’t always experience symptoms that match up with their stage, some experts believe that other staging methods may better direct treatment.

Treatment and Medication Options for Stage 4 Endometriosis

Treatment for endometriosis looks similar across all stages, except that stage 4 endometriosis may require surgery for symptom control.

Medication Options

Medication for stage 4 endometriosis focuses on relieving pain and managing hormone levels. Hormone therapies can slow endometrial tissue growth and prevent new implants.

Hormonal medications come in pills, shots, and nasal sprays, including:

  • Birth control pills: These control estrogen and progesterone levels and can be right for those who are not trying to get pregnant.
  • Levonorgestrel-releasing intrauterine devices: These may help with pelvic pain. (Mirena is an example of one.)
  • Progestins: These stop menstrual periods and the growth of endometrial tissue.
  • Gonadotropin-releasing hormone (GnRH) antagonists: These limit ovarian hormone production.
  • GnRH agonists: These stop ovarian hormones.
  • Aromatase inhibitors: These lower estrogen levels.

Your provider may also recommend pain relievers for symptom management.

Surgery

For severe stage 4 endometriosis, your provider may recommend surgery to remove endometrial tissue and scar tissue.

Surgical options include:

  • Laparoscopy: In this minimally invasive procedure, endometrial tissue and scar tissue are removed via small incisions.
  • Laparotomy: This requires a larger incision to remove tissue and is used less often.
  • Hysterectomy: In this procedure, the uterus is removed to stop endometrial tissue growth.
  • Oophorectomy: Here the ovaries are removed to stop hormone production.

Complementary and Integrative Therapies

Some people with stage 4 endometriosis report symptom relief from complementary therapies, such as:


Always check with your healthcare provider before taking any new herbs or supplements.

Prevention of Stage 4 Endometriosis

Although endometriosis itself can’t be prevented, you can slow its progression to stage 4 by following your treatment plan.

 Medications that treat endometriosis can slow tissue growth and prevent new implants. If you experience any symptoms of endometriosis, let your provider know.

Stage 4 Endometriosis Prognosis

No cure exists for stage 4 endometriosis, but the condition isn’t life-threatening, and you can treat the symptoms and slow its progression.

Some people may experience relief over time, as endometriosis pain can improve after menopause. Others may have continual pain that affects their daily life.

Complications of Stage 4 Endometriosis

The most common complication of stage 4 endometriosis is infertility. People with endometriosis may experience higher rates of miscarriage and ectopic pregnancy.

If you’re concerned about your fertility, you can ask your provider about the many treatments to improve fertility in stage 4 endometriosis.

Other complications of stage 4 endometriosis may include:

If you experience any of these symptoms, notify your healthcare provider. For shortness of breath and chest pain, go to a nearby emergency room or call 911.

Research and Statistics: Who Has Stage 4 Endometriosis?

Around the world, endometriosis affects about 190 million women and girls of reproductive age (10 percent).

 In a study review of about 127,000 women with endometriosis in the United States, only 2 percent had stage 4, compared with 20 percent with stage 1.

Disparities may exist in data involving endometriosis of any stage, since few studies have explored how symptoms vary across different races and ethnicities. These inequities often come from selection bias — choosing mostly people of white racial origin for studies. So, experts may not identify stage 4 endometriosis in women of color as easily.

Some studies indicate that endometriosis diagnoses are more common in Asian women and less common in Black women, compared with white women.

 But other research finds no difference in endometriosis between racial groups. Endometriosis is one of the most common reasons for Black women in the United States to have gynecologic surgery.

Related Conditions

Endometriosis is a disease of the uterus, involving the overgrowth of uterine endometrial tissue outside of that organ. The pain and other symptoms associated with this disease can also point to other related conditions, including:

Support for People With Stage 4 Endometriosis

The Endometriosis Association

This organization offers support for anyone with endometriosis. They offer an advocacy program, a correspondence support network, an online community, and a crisis hotline.

Endometriosis Foundation of America (EndoFound)

This organization provides support through patient resources, conferences, and community outreach programs. They also support research, boost public awareness, and provide education on endometriosis to communities and healthcare providers.

MyEndometriosisTeam

This organization offers emotional support and practical advice through discussion forums, resource sharing, and peer support. They provide a safe space for people to connect and exchange treatment insights with other people going through similar symptoms.

The Takeaway

  • Stage 4 endometriosis is the most severe stage of this chronic disease, with symptoms including increased pain, implants outside the pelvis, and extensive scar tissue.
  • Experts don’t know what causes endometriosis at any stage, but risk factors include age, family history, not having had children, diet, and getting your first period before age 11. Treatments for stage 4 endometriosis may include hormone medications, pain relief, and surgery.
  • Although stage 4 endometriosis has no cure, treatments can help you manage symptoms and live a long, full life.

Common Questions & Answers

How serious is stage 4 endometriosis?
Stage 4 endometriosis can cause complications such as infertility, cancer, mental health issues, sexual problems, and a lower quality of life. Rarely, endometrial tissue growth in the chest can cause shortness of breath and chest pain.
Yes, you can still get pregnant with stage 4 endometriosis, but it may be more challenging. You can work with your healthcare provider to assess your chances of pregnancy and possible treatment options to boost your fertility.
Women with stage 4 endometriosis have a higher risk of miscarriage, but the disease doesn’t guarantee poor pregnancy outcomes, and many women with endometriosis complete their pregnancies.
With the right treatment, you can live a full and satisfying life with stage 4 endometriosis.
Stage 4 endometriosis has no cure, but the right treatment can lessen symptoms and slow disease progression.
EDITORIAL SOURCES
Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.
Resources
  1. Endometriosis and Fertility. Brigham and Women’s Hospital.
  2. Endometriosis Stages: Understanding the Different Stages of Endometriosis. Endometriosis Foundation.
  3. What Are the Symptoms of Endometriosis? National Institute of Child Health and Human Development. February 21, 2020.
  4. Endometriosis. Johns Hopkins Medicine.
  5. Endometriosis. MedlinePlus. January 21, 2025.
  6. Endometriosis. Office on Women’s Health. February 22, 2021.
  7. Endometriosis. Mount Sinai.
  8. Lee S et al. Classification of Endometriosis. Yeungnam University Journal of Medicine. August 7, 2020.
  9. Capezzuoli T et al. Classification/Staging Systems for Endometriosis: The State of the Art. GREM: Gynecological and Reproductive Endocrinology & Metabolism. February 20, 2020.
  10. Endometriosis: Diagnosis and Treatment. Mayo Clinic. August 30, 2024.
  11. As-Sanie S et al. Short-Acting and Long-Acting Opioids Utilization Among Women Diagnosed With Endometriosis in the United States: A Population-Based Claims Study. Journal of Minimally Invasive Gynecology. February 1, 2021.
  12. Endometriosis. Cleveland Clinic. September 16, 2024.
  13. Bahat PY et al. Dietary Supplements for Treatment of Endometriosis: A Review. Acta Biomedica. March 14, 2022.
  14. Skinner M. Everything You Need to Know About Pelvic Floor Physical Therapy (PFPT) for Endometriosis. Endometriosis Foundation of America. February 15, 2022.
  15. Hansen S et al. Impact of Exercise on Pain Perception in Women With Endometriosis: A Systematic Review. Acta Obstetricia et Gynecologica Scandinavica. September 2021.
  16. The Best and Worst Foods for an Anti-Inflammatory Endometriosis Diet. Cleveland Clinic. January 28, 2022.
  17. Fan X et al. Gabapentin Has Longer-Term Efficacy for the Treatment of Chronic Pelvic Pain in Women: A Systematic Review and Pilot Meta-Analysis. Pain and Therapy. December 1, 2021.
  18. Sinclair J et al. Effects of Cannabis Ingestion on Endometriosis-Associated Pelvic Pain and Related Symptoms. PLOS One. October 26, 2021.
  19. Endometriosis. Yale Medicine.
  20. Tsamantioti ES et al. Endometriosis. StatPearls. January 23, 2023.
  21. Other Endometriosis FAQs. National Institute of Child Health and Human Development. February 21, 2020.
  22. Della Corte L et al. The Burden of Endometriosis on Women’s Lifespan: A Narrative Overview on Quality of Life and Psychosocial Wellbeing. International Journal of Environmental Research and Public Health. June 29, 2020.
  23. Endometriosis. World Health Organization. March 24, 2023.
  24. Moradi Y et al. A Systematic Review on the Prevalence of Endometriosis in Women. Indian Journal of Medical Research. September 2021.
  25. Bougie O et al. Revisiting the Impact of Race/Ethnicity in Endometriosis. Reproduction & Fertility. March 17, 2022.
  26. Bougie O et al. Putting a Stop to Misconceptions About Race and Endometriosis. Endometriosis.org. November 24, 2020.
  27. Common Reproductive Health Concerns for Women. Centers for Disease Control and Prevention. May 15, 2024.
Additional Sources
  • Boje AD et al. Endometriosis Is Associated With Pregnancy Loss: A Nationwide Historical Cohort Study. Fertility and Sterility. May 2023.
John-Paul-McHugh-bio

John Paul McHugh, MD

Medical Reviewer

John Paul McHugh, MD, is an obstetrician-gynecologist and lifestyle medicine specialist in southern California. He has always placed wellness at the center of his work, in both delivering babies and improving practice standards. Dr. McHugh believes that bringing lifestyle medicine to the center of health and wellness empowers patients to make the change they seek and enjoy the benefits of true wellness.

He is a graduate of Harvard Medical School and the Massachusetts Institute of Technology and a fellow of the American College of Lifestyle Medicine. He served as a department chair at Scripps Mercy Hospital in San Diego and is now the chair-elect for the American College of Obstetricians and Gynecologists for California.

He has published several articles in the American Journal of Lifestyle Medicine and served as a peer reviewer for many articles. He contributed to the first textbook of lifestyle medicine in women's health: Improving Women's Health Across the Lifespan.

Abby McCoy, RN

Author

Abby McCoy is an experienced registered nurse who has worked with adults and pediatric patients encompassing trauma, orthopedics, home care, transplant, and case management. She is a married mother of four and loves the circus — that is her home! She has family all over the world, and loves to travel as much as possible.

McCoy has written for publications like Remedy Health Media, Sleepopolis, and Expectful. She is passionate about health education and loves using her experience and knowledge in her writing.