What is Endometriosis

TL;DR: Endometriosis is a chronic, systemic condition where tissue similar to the lining of the uterus grows outside of it, typically on pelvic organs, leading to inflammation, scarring, and often chronic pain. With 1,727 members currently sharing their experiences on DiseaseMaps.org, it is recognized as a complex, whole-body inflammatory disease that affects an estimated 1 in 10 women of reproductive age worldwide.

What exactly is endometriosis and how does it affect the body?

Endometriosis occurs when endometrial-like cells—the tissue that normally lines the inside of the uterus—develop in areas where they do not belong. Unlike the uterine lining, which sheds during menstruation, this misplaced tissue has no way to exit the body. As it thickens, breaks down, and bleeds with each hormonal cycle, it becomes trapped, causing irritation, inflammation, and the formation of fibrous scar tissue (adhesions). While endometriosis primarily affects the pelvic cavity (including the ovaries, fallopian tubes, and the tissue lining the pelvis), it can also spread to the bowel, bladder, and, in rare instances, areas outside the abdomen such as the diaphragm or lungs.

What are the different types of endometriosis?

Clinicians generally categorize endometriosis into three primary subtypes based on the location and depth of the tissue growth. Understanding these classifications is helpful for discussing treatment options with your medical team:

• Superficial Peritoneal Endometriosis: The most common form, involving thin lesions on the surface of the pelvic lining (peritoneum).


• Ovarian Endometrioma: Also known as "chocolate cysts," these occur when the tissue invades the ovaries, forming fluid-filled cysts that can impact fertility.


• Deep Infiltrating Endometriosis (DIE): The most severe form, where tissue grows more than 5mm beneath the surface of the peritoneum, often involving the bowel, bladder, or ligaments supporting the uterus.

How common is endometriosis and who is at risk?

Endometriosis is a widespread health challenge, affecting approximately 10% (190 million) of women and individuals assigned female at birth globally. While the condition is most commonly diagnosed in people between the ages of 25 and 40, symptoms can begin as early as the first menstrual period. There is no specific geographic restriction for endometriosis; however, delays in diagnosis are common across all populations, with the average time to diagnosis often spanning 7 to 10 years due to the normalization of pelvic pain.

How does endometriosis differ from other pelvic conditions?

A key factor that distinguishes endometriosis from conditions like Primary Dysmenorrhea (period cramps) or Pelvic Inflammatory Disease (PID) is the presence of systemic inflammation and the potential for organ involvement. Unlike simple cramping, the pain associated with endometriosis is often progressive, non-cyclical, and can become debilitating. Furthermore, diagnostic imaging like ultrasounds may appear normal in patients with superficial endometriosis, which is why clinical expertise is vital for an accurate diagnosis.

Next steps

• Consult a specialist: Seek out a gynecologist who specializes in minimally invasive surgery or a dedicated endometriosis center.


• Track your symptoms: Keep a detailed log of your pain, cycles, and associated symptoms to share during your consultation.


• Join the community: Connect with the 1,727 members on DiseaseMaps.org to share experiences and find support from others navigating this journey.


• Explore clinical trials: Check clinicaltrials.gov for ongoing research regarding new diagnostic tools and non-hormonal therapies.

Medical Disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician with any questions regarding a medical condition.

References

• World Health Organization (WHO): Endometriosis Fact Sheet


• NIH Genetic and Rare Diseases Information Center (GARD): Endometriosis Overview


• Orphanet: Rare Disease Database (Endometriosis)


• Endometriosis Foundation of America (EndoFound)