Endometriosis: Why It Takes Years to Diagnose — and What You Can Do About It

Endometriosis affects an estimated 42 million Indian women, yet the average diagnostic delay is 7–10 years. Dr. Neha Sain explains the symptoms that are routinely dismissed, how the condition is properly diagnosed, what treatment options exist, and why early intervention matters for fertility.

There is a particular pattern I notice with endometriosis patients. By the time they reach me with a confirmed or suspected diagnosis, many of them have been managing their symptoms — often debilitating ones — for years. They have been told their periods are "just heavy," that the pain is "normal," that they are being "sensitive," or that all women suffer like this. They have tried multiple pain medications, been to multiple doctors, and sometimes had the unsettling experience of seeing a scan or blood test reported as normal, which made them feel like the problem must be in their head rather than in their pelvis.

It is not in their head. Endometriosis is a real, progressive, systemic inflammatory condition with a well-established biological basis — and it is one of the most underdiagnosed conditions in women's medicine, globally and in India specifically.

What Endometriosis Actually Is

Endometriosis is a condition in which tissue that is similar to the endometrium — the lining that normally lines the inside of the uterus and sheds each month as a period — grows in locations outside the uterus. These implants are most commonly found on the ovaries, the fallopian tubes, the outside of the uterus, the bladder, the bowel, and the ligaments supporting the pelvic organs.

Unlike the uterine lining, which exits the body during menstruation, these external implants have no means of escape. Each month, under the influence of oestrogen, they swell, bleed internally, and then scar. This repeated cycle of inflammation and scarring is what drives the pain, the adhesions (internal scar tissue that fuses organs together), and eventually the damage to fertility.

The condition is estimated to affect approximately 10% of women of reproductive age globally. In India, epidemiological estimates suggest it affects upwards of 42 million women — though this figure likely understates the true burden given how dramatically underdiagnosed it is.

The Symptoms That Deserve to Be Taken Seriously

Painful periods (dysmenorrhoea): This is the most common presenting symptom. The critical distinction is that endometriosis pain is typically not just discomfort — it is pain that interferes with daily life, that does not adequately respond to standard over-the-counter pain relief, and that may worsen progressively over the years. Many women with endometriosis have normalised severe period pain because it has been present since adolescence and everyone around them minimised it.

Chronic pelvic pain: Pain that persists outside of menstruation — in the lower abdomen, pelvis, lower back, or deep in the pelvis — is a significant symptom. It is distinct from period cramps and is frequently underreported.

Pain during or after sex (dyspareunia): Deep dyspareunia — pain felt deep inside rather than at the vaginal entrance during penetrative sex — is strongly associated with endometriosis, particularly disease affecting the uterosacral ligaments or the rectovaginal space.

Cyclical bowel and bladder symptoms: Many women with endometriosis notice that their bowel habits change around their period — more urgency, bloating, pain with bowel movements, or even bleeding from the rectum during menstruation. Similarly, urinary urgency, frequency, or pain with urination that worsens cyclically can indicate bladder involvement.

Fatigue: This is one of the most underappreciated symptoms of endometriosis and one of the most debilitating. The chronic systemic inflammation driven by the condition produces a fatigue that is qualitatively different from ordinary tiredness.

Difficulty conceiving: Approximately 30–50% of women with endometriosis experience some degree of fertility impairment. The mechanisms are multiple — pelvic adhesions that distort anatomy and block tubes, a hostile inflammatory environment in the pelvis, and evidence suggesting direct effects on egg quality in severe disease.

Why Diagnosis Takes So Long — and What Proper Diagnosis Looks Like

The global average delay between symptom onset and diagnosis of endometriosis is 7 to 10 years. In India, the delay is often longer, driven by cultural normalisation of period pain, limited access to specialist gynaecological care, and genuine diagnostic difficulty.

Here is an important clinical fact that explains much of this delay: there is no blood test that reliably diagnoses endometriosis. CA-125 — a tumour marker sometimes measured in this context — is neither sensitive nor specific enough to be diagnostic. It can be elevated in endometriosis but is also elevated in many other conditions and is normal in many women with confirmed disease.

Ultrasound is useful for detecting endometriomas (chocolate cysts on the ovaries) and deeply infiltrating disease affecting the bowel or bladder when performed by an experienced sonographer using a specific protocol. However, a normal ultrasound does not rule out endometriosis, particularly mild or moderate peritoneal disease.

MRI provides better soft tissue visualisation and is superior for mapping deeply infiltrating endometriosis in the bowel and rectovaginal space.

Laparoscopy with biopsy remains the definitive diagnostic method — a minimally invasive surgical procedure that allows direct visualisation of the pelvis and biopsy of suspicious tissue. The decision to proceed to diagnostic laparoscopy should be based on clinical presentation, not on whether imaging has identified a lesion.

If you have classic symptoms and your ultrasound has been reported as normal, this does not mean you do not have endometriosis. Please do not stop pursuing answers.

Treatment Options

Hormonal suppression: The goal is to reduce oestrogen exposure and suppress menstruation, thereby reducing the growth and inflammation of endometriotic tissue. Options include combined oral contraceptives (the pill), progestogens (tablets, injections, or the levonorgestrel-releasing IUD/Mirena), and in more severe cases, GnRH analogues which induce a temporary medical menopause. These treatments are effective for pain management but are not curative — symptoms often return when they are stopped, which is why endometriosis management is typically a long-term endeavour.

Surgical treatment: For moderate to severe disease, or for endometriomas that are symptomatic or growing, laparoscopic surgery to excise (cut out) or ablate (destroy) endometriotic lesions is appropriate. Excision is generally preferred over ablation for deeper disease because it allows histological confirmation and more complete removal. Surgery provides meaningful symptom relief but does not guarantee permanent resolution — recurrence rates are real and depend on the extent of disease and post-operative medical management.

For fertility: If endometriosis is affecting your ability to conceive, management is more nuanced and depends on the stage of disease, your age, ovarian reserve, and your partner's fertility parameters. Surgical removal of endometriomas and adhesions may improve natural conception rates in some women; IVF is appropriate in others. This requires specialist input, and the decisions are not one-size-fits-all.

Pain management: NSAIDs, when taken at the onset of menstruation rather than waiting for pain to peak, are more effective for period pain. Heat therapy, physiotherapy for pelvic floor dysfunction, and dietary approaches that reduce inflammatory load are adjunctive measures with supporting evidence.

Living With Endometriosis

Endometriosis is a chronic condition for which there is currently no cure. But it is manageable, and the key to good outcomes is a combination of accurate diagnosis, appropriate treatment, and a clinician who takes the symptoms seriously and revisits the management plan over time.

If you recognise your experience in this article and have not yet had a proper evaluation, please pursue one. And if you have been told your pain is normal when it is not, please seek a second opinion.

You are welcome to submit a Smart Consultation if you would like a clinical assessment of your symptoms and guidance on the appropriate next step.