Endometriosis: Symptoms, Causes, Diagnosis & Treatment in India

• Endometriosis is tissue similar to the uterine lining growing outside the uterus — most often on the ovaries, pelvic lining, and the spaces behind the uterus.
• The hallmark is pain: progressively worse period cramps, pain during deep intercourse, painful bowel movements during periods, and chronic pelvic pain.
• It affects roughly 1 in 10 women of reproductive age and is present in 30–50% of women evaluated for infertility.
• In India the average diagnosis takes 7–11 years — largely because severe period pain is wrongly normalised. Earlier evaluation matters.
• There is no cure, but hormonal medicines, well-chosen surgery, and a multidisciplinary pain plan can control symptoms and protect fertility and quality of life.

Endometriosis is the growth of tissue similar to the endometrium (the lining shed each period) in places it shouldn't be — outside the uterine cavity. The word 'similar' matters: research now shows these lesions have their own genetic, hormonal, and inflammatory behaviour, so endometriosis is increasingly understood as a disease in its own right rather than just displaced normal lining.

Like the uterine lining, this tissue responds to the hormones of each cycle — it builds up and bleeds. But because it has no way to leave the body, it triggers inflammation, scarring, and adhesions (bands of sticky tissue that can fuse organs together).

Doctors describe three main forms, which often overlap:

• Superficial peritoneal endometriosis — flat patches (red, black, blue, white, or clear) on the lining of the pelvis. This is the most common finding at keyhole surgery.
• Ovarian endometriomas — cysts of old, altered blood inside the ovary, often called 'chocolate cysts'. These are the form most reliably seen on ultrasound and overlap with other types of ovarian cysts.
• Deep infiltrating endometriosis (DIE) — tissue burrowing more than 5 mm under the surface, typically into the ligaments behind the uterus, the wall between the vagina and rectum, the bowel, bladder, or ureters. This form causes the most severe pain and the most complex surgery.

The honest answer is that no single theory explains everything. Several mechanisms probably act together:

• Retrograde menstruation — the oldest idea (Sampson, 1927): during a period, some menstrual blood flows backward through the fallopian tubes into the pelvis, carrying lining cells that implant. But this backward flow happens in most menstruating women, yet only some develop endometriosis — so it can't be the whole story.
• Coelomic metaplasia — pelvic surface cells transform into endometrial-like tissue under hormonal or inflammatory triggers.
• Lymphatic and blood-vessel spread — explains the rare cases found in the lungs, diaphragm, or old surgical scars.
• Stem-cell theories — progenitor cells differentiate into misplaced lining.
• Immune differences — the immune system fails to clear the refluxed tissue and allows it to settle and grow.

Endometriosis shows up as a cluster of overlapping symptoms rather than one tidy complaint. Gynaecologists often teach the 'five Ds':

• Dysmenorrhoea — period pain that gets progressively worse year on year, is poorly controlled by ordinary NSAIDs, and may start days before bleeding and continue after. This is different from ordinary painful periods, where it helps to know what's okay and what's not.
• Dyspareunia — deep pain during sex, especially on deep penetration or in certain positions, is highly suggestive and overlaps with other causes of painful intercourse.
• Dyschezia — pain on opening the bowels, particularly during periods, sometimes with cyclical rectal bleeding (suggests bowel involvement).
• Dysuria — painful urination or cyclical blood in the urine (suggests bladder involvement).
• Difficulty conceiving — endometriosis is found in 30–50% of women evaluated for infertility.

Indian women wait, on average, 7–11 years from their first symptom to a confirmed diagnosis. The reasons stack up:

• Pain is normalised. Mothers, aunts, and elder sisters often describe agonising periods as simply 'a woman's lot', and teenagers are told to bear it. A girl whose menstrual cramps keep her out of school is too often dismissed rather than investigated.
• Low awareness among general practitioners and many junior gynaecologists means the pattern isn't recognised early.
• Diagnostic hesitancy. The traditional gold standard — diagnostic keyhole surgery — is invasive and undertaken cautiously, especially for unmarried women in conservative settings where even a pelvic exam can be culturally fraught.
• Operator-dependent imaging. Ultrasound and MRI can reliably show endometriomas and much deep disease, but only when read by radiologists specifically trained in endometriosis imaging — a small group concentrated in metro centres.
• Access gaps. Women outside major cities may cycle through years of different contraceptive pills at local clinics before reaching a specialist.

Diagnosis starts with a careful history — your doctor should ask specifically about how your period pain has changed over the years, pain with sex, cyclical bowel or bladder symptoms, fertility plans, and family history. A pelvic examination may reveal a fixed, tender uterus, nodules behind the uterus, or a mass suggesting an endometrioma.

• Transvaginal ultrasound is first-line imaging — operator-dependent but highly accurate for endometriomas and, in trained hands using the IDEA protocol, increasingly good at mapping deep disease (₹800–2,500).
• Pelvic MRI with bowel and vaginal preparation maps deep, bowel, and bladder disease and guides surgery; available at AIIMS, PGIMER, CMC Vellore, and major private radiology chains (₹6,000–18,000).
• CA-125 blood test is non-specific and is not recommended to diagnose endometriosis.
• Laparoscopy (keyhole surgery) with a tissue biopsy remains the definitive test when imaging is unclear, when surgery is planned, or during a fertility work-up. Understanding what laparoscopy involves can ease the anxiety around it.

Medical therapy works by quietening the monthly hormone cycle so the misplaced tissue bleeds and inflames less. It controls symptoms; it does not erase the disease, and success is judged by how you feel, not by lesions vanishing. Treatment is usually long-term, because symptoms tend to return when it stops.

The options, broadly stepped:

• NSAIDs (mefenamic acid, ibuprofen, diclofenac) for pain — useful but rarely enough on their own. See practical period pain relief options.
• Combined hormonal contraception (the pill, patch, or ring), often taken continuously to skip periods (₹150–500/month). It helps to know the common side effects and which settle.
• Progestin-only options — oral dienogest 2 mg daily is increasingly used first-line for endometriosis pain in India (₹500–1,500/month), plus norethisterone, medroxyprogesterone, and the hormonal IUS (Mirena, Emily), which delivers about 5 years of local suppression (₹6,000–14,000). A hormonal IUS is a strong option when periods are also heavy.
• GnRH agonists (leuprolide, goserelin) create a reversible, temporary menopause with strong pain relief, but cause bone-density loss, so use beyond 6 months needs 'add-back' hormones (₹3,500–7,000 per monthly injection).
• GnRH antagonists (elagolix, relugolix) and aromatase inhibitors are used in selected or refractory cases.

Surgery aims to remove visible disease, free up stuck organs, and relieve pain. Done by an experienced surgeon, it can be very effective — and outcomes correlate strongly with that surgeon's experience, which is why ESHRE, AAGL, and FOGSI all recommend referring moderate-to-severe disease to specialist centres.

• Laparoscopic excision (cutting the disease out) is generally preferred over ablation (burning), especially for deep disease, because it removes the full thickness of tissue and is linked to better long-term pain relief and lower recurrence.
• Ovarian cystectomy for endometriomas reduces pain and recurrence but can lower ovarian reserve — so if you're planning a pregnancy, discuss it with a fertility specialist first.
• Complex multi-organ surgery (bowel resection, ureter or bladder repair) is reserved for deep disease and performed at a small number of expert public and private centres.

Endometriosis is found in 30–50% of women evaluated for infertility, through several routes: scarring that distorts the tubes and ovaries; reduced ovarian reserve from endometriomas and from cyst surgery; and a pelvic and uterine environment less hospitable to fertilisation and implantation. Many women with endometriosis still conceive — but it can take longer or need help.

Management is individualised:

• Younger women with mild disease and good ovarian reserve may do well with timed intercourse or surgical excision.
• Older women, those with significant disease, or low reserve are often guided toward IVF sooner (₹1.2–3.5 lakh per cycle in India).
• Large endometriomas before IVF are debated; current guidance leans toward leaving small cysts alone, because removing them can cost ovarian reserve.

Endometriosis is chronic, and it touches work, intimacy, finances, mood, and identity. Indian women describe missed school and work, strained relationships, anxiety about fertility, and the deep frustration of having been disbelieved for years. None of this means the pain is 'in your head' — chronic pain is real, and it isn't laziness.

A multidisciplinary approach works best:

• Pelvic floor physiotherapy can ease the muscle tension that builds up around chronic pelvic pain (₹600–2,000 per session in metro centres) — see how pelvic floor therapy helps.
• Pain psychology, CBT, and mindfulness address the load that persistent pain places on mental health, and careful sleep habits help.
• Nerve-targeting medicines (gabapentin, pregabalin, amitriptyline) are used under specialist supervision for stubborn pain.
• Diet and movement may help some women — an anti-inflammatory eating pattern with more fish, leafy vegetables, fruit, and whole grains and less red meat and refined sugar is reasonable, alongside foods that ease cramps, though no diet cures endometriosis. Regular moderate exercise improves both pain and mood.
• Support communities and including your partner and family in clinic visits reduce isolation, because endometriosis genuinely affects relationships and shared plans.

A tiered route works best:

1. Start with a gynaecologist who takes your pain history seriously and arranges a transvaginal ultrasound or pelvic MRI with an experienced sonographer or radiologist (OPD ₹600–2,500; TVS ₹800–2,500; MRI ₹6,000–18,000).
2. If endometriosis is suspected or confirmed, ask for referral to a centre with genuine endometriosis expertise — this matters most for deep disease, infertility, or when first-line treatment has failed.
3. Know where the expertise is. Public-sector excellence exists at AIIMS Delhi, PGIMER Chandigarh, JIPMER Puducherry, CMC Vellore, and KEM and Sion Hospitals Mumbai. Major private chains (Apollo, Fortis, Manipal, Max, Medanta, Cloudnine, Nova IVF) offer subspecialist surgeons and fertility teams.

Book a gynaecology appointment if you have any of the following — don't wait years:

• Period pain that is getting worse year on year, or that ordinary painkillers no longer control.
• Pain that keeps you home from school, work, or normal activities.
• Deep pain during or after sex.
• Painful bowel movements or pain on urinating that flare with your period, or cyclical bleeding from the back passage or in your urine.
• Chronic pelvic pain lasting more than 6 months.
• Difficulty conceiving after 12 months of trying (or 6 months if you're over 35), especially alongside painful periods.

• World Health Organization — Endometriosis fact sheet
• ESHRE Guideline: Endometriosis (2022)
• ACOG — Endometriosis (Patient FAQ)
• NHS — Endometriosis
• NICE Guideline NG73 — Endometriosis: diagnosis and management