Endometriosis: Symptoms, Diagnosis, and Treatment Explained

Endometriosis affects roughly 1 in 10 women of reproductive age, yet it often takes years to diagnose because its symptoms are so easy to dismiss as "just bad periods." Here's a thorough look at what's actually happening in the body, how it's diagnosed, and the full range of treatment options available today.

What Is Endometriosis?

Endometriosis is a condition where tissue similar to the lining of the uterus (the endometrium) grows outside the uterus — most often on the ovaries, fallopian tubes, and the tissue lining the pelvis. Like the normal uterine lining, this misplaced tissue thickens, breaks down, and bleeds with each menstrual cycle. Unlike a normal period, however, this blood has no way to leave the body, leading to inflammation, pain, and over time, scar tissue or adhesions.

Common Symptoms

• Painful periods (dysmenorrhea) that often worsen over time and don't fully respond to regular pain relief
• Chronic pelvic pain, not limited to menstruation
• Pain during or after intercourse
• Pain with bowel movements or urination, especially during periods
• Heavy menstrual bleeding or bleeding between periods
• Fatigue, bloating, and digestive issues around the time of your period
• Difficulty getting pregnant — endometriosis is found in roughly 30–50% of women experiencing infertility

What Causes It?

The exact cause isn't fully understood, but leading theories include:

• Retrograde menstruation – Menstrual blood flowing backward through the fallopian tubes into the pelvis instead of leaving the body
• Genetics – Endometriosis tends to run in families
• Immune system factors – A weakened ability to clear misplaced endometrial cells
• Cellular transformation – Certain cells outside the uterus transforming into endometrial-like cells

How Is Endometriosis Diagnosed?

Diagnosis often takes time because symptoms overlap with other conditions. Your doctor's evaluation may include:

• Detailed symptom history and pelvic exam – To check for tenderness, cysts, or scarring
• Ultrasound – Can identify larger endometriomas (cysts caused by endometriosis) on the ovaries, though it can't detect smaller patches
• MRI – Offers more detail for complex or deep endometriosis
• Laparoscopy – A minor keyhole surgery that remains the definitive way to confirm endometriosis, allowing the surgeon to directly see (and often treat) the tissue and, if needed, take a biopsy

Treatment Options

There's no single cure for endometriosis, but a wide range of treatments can significantly reduce symptoms and improve quality of life:

• Pain relief – Anti-inflammatory medications (like ibuprofen) for symptom management
• Hormonal therapy – Birth control pills, hormonal IUDs, or GnRH agonists to reduce or stop periods, which can slow the growth of endometrial tissue and ease pain
• Laparoscopic surgery – Excision or ablation of endometriosis patches and removal of endometriomas, often combined with treating any related scar tissue; can also improve fertility outcomes
• Fertility treatment – For those trying to conceive, options range from surgery to improve fertility to IVF, depending on severity
• Hysterectomy – Considered only in severe, treatment-resistant cases where childbearing is complete, and even then doesn't guarantee symptom resolution if endometriosis tissue remains elsewhere

Living with Endometriosis

Beyond medical treatment, many women find that a combination of approaches helps manage day-to-day life with endometriosis:

• Working with a gynaecologist who specialises in endometriosis for ongoing, personalised care
• Physiotherapy focused on pelvic floor and pain management
• Anti-inflammatory dietary changes, which some women find helpful (though evidence varies)
• Support groups and counselling — living with chronic pain can be exhausting, and connecting with others who understand can make a real difference
• Tracking symptoms to identify patterns and share clear information with your doctor

Endometriosis and Fertility

While endometriosis is linked to a higher chance of fertility difficulties, many women with the condition do conceive naturally, and those who need help have good success with treatments like laparoscopic surgery, ovulation induction, or IVF. If you're trying to conceive and have (or suspect) endometriosis, an early conversation with a fertility-focused gynaecologist can help you understand your options sooner rather than later.

The Takeaway

Endometriosis is common, real, and treatable — even though it's often under-recognised. If period pain or pelvic pain is disrupting your life, you don't have to just "push through it." A proper evaluation can open the door to treatments that genuinely help.