Endometriosis: symptoms, diagnosis and what helps

Reviewed by Emma Carter, Senior Health & Nutrition Editor

Endometriosis is common, painful and routinely underestimated. The WHO estimates it affects 10% of reproductive-age women worldwide, around 190 million people, and puts the average time to diagnosis at 4 to 12 years, largely because its main symptom, period pain, gets waved away as normal. Understanding what it is and what genuinely helps is the first step to getting taken seriously.

What it is

Endometriosis is a chronic condition where tissue similar to the lining of the uterus grows outside it, most often on the ovaries, fallopian tubes and the lining of the pelvis. This tissue behaves like the uterine lining: it responds to the hormonal signals of the menstrual cycle, building up and breaking down. But unlike a period, it has no way to leave the body, so it causes inflammation, pain and, over time, scar tissue that can bind organs together.

Symptoms

Symptoms vary widely, which is part of why it is missed. Common ones include:

• Painful periods that disrupt daily life
• Chronic pelvic pain, not only during periods
• Pain during or after sex
• Pain with bowel movements or urination, often worse around your period
• Heavy or irregular bleeding
• Difficulty getting pregnant
• Fatigue, especially around menstruation

One frustrating feature is that symptom severity does not match how much disease is present. Some women have intense pain with small amounts of tissue; others have extensive disease with mild symptoms.

Why diagnosis takes so long

Endometriosis is notorious for delays to diagnosis, often several years. Several things drive this:

• Period pain is widely, and wrongly, treated as something women should just endure
• Symptoms overlap with conditions like irritable bowel syndrome and pelvic infections
• Ultrasound and MRI can suggest endometriosis but cannot reliably exclude it
• A definitive diagnosis has traditionally needed laparoscopy, a keyhole operation

The scale of it is documented: the delay from first symptoms to diagnosis runs 4 to 11 years, and women often make around seven visits to a primary care provider before being referred on. Reliance on laparoscopy, which doctors hesitate to perform in young patients because it is surgery, is a large part of why (Reproduction & Fertility, 2023).

If your period pain is severe enough to interfere with your life, that is not something to accept quietly. It is a reason to push for assessment.

Treatment

There is no cure, but treatment can control symptoms and protect fertility. Care usually combines:

• Pain relief, including anti-inflammatory medication
• Hormonal treatment, such as the combined pill, which is often considered first-line because endometriosis is estrogen-dependent and treatment works by suppressing estrogen and ovulation (Reproduction & Fertility, 2023), progesterone-based options or other therapies that quiet the cycle feeding the tissue
• Surgery, keyhole surgery to remove or destroy endometriosis tissue, which can reduce pain and improve fertility
• Fertility support, including IVF where conception is difficult

The right combination depends on your symptoms, your age and whether you are trying to conceive, so care is individual.

Nutrition and lifestyle

Here the honest framing matters. Diet cannot remove endometriosis tissue or replace medical treatment. Even so, some women find that an anti-inflammatory eating pattern, regular gentle exercise, and good pain and stress management help them cope and feel better day to day. Treat these as supportive measures alongside proper medical care, not alternatives to it. Be wary of any source promising to cure endometriosis through diet alone.

When to see a doctor

See your doctor if you have period pain that disrupts your life, chronic pelvic pain, pain during sex, or difficulty getting pregnant. Ask directly about endometriosis and, if you are not getting answers, seek referral to a gynecologist. Persistent, severe period pain is a medical issue worth investigating, not a normal part of being a woman.

Frequently asked questions

What is endometriosis?

Endometriosis is a condition where tissue similar to the lining of the uterus grows outside it, usually elsewhere in the pelvis. This tissue responds to the menstrual cycle and can cause pain, heavy periods and difficulty getting pregnant. It affects an estimated 10 percent of women and girls of reproductive age.

What are the symptoms of endometriosis?

The most common symptoms are painful periods, chronic pelvic pain, pain during or after sex, pain with bowel movements or urination, heavy bleeding, and trouble conceiving. Some women have severe symptoms with little visible disease, and others have extensive disease with few symptoms.

Why does endometriosis take so long to diagnose?

On average it takes years to diagnose. Symptoms overlap with other conditions, period pain is often dismissed as normal, and definitive diagnosis has traditionally required keyhole surgery. Imaging can suggest it but cannot rule it out, so the path to a diagnosis is often long.

Can diet help endometriosis?

Diet is not a cure and cannot remove the tissue, but some women find an anti-inflammatory eating pattern helps with symptoms and general wellbeing. The strongest treatments are medical and surgical. Nutrition is a supportive measure alongside, not instead of, proper care.

References

1. Current endometriosis care and opportunities for improvement · Reproduction & Fertility, 2023
2. Endometriosis: causes, symptoms, diagnosis and treatment · Cleveland Clinic
3. Endometriosis fact sheet · World Health Organization