Endometriosis affects approximately 1 in 10 women and people with a uterus — around 1.5 million in the UK. The condition involves tissue resembling the uterine lining growing outside the uterus, causing chronic inflammation, scarring and often severe pain. The average time from symptom onset to diagnosis remains 8 years — an unacceptable gap driven by symptoms being dismissed as “normal” period pain.
Understanding the Condition
Ectopic endometrial-like tissue responds to hormonal fluctuations just as the uterine lining does — thickening, breaking down and bleeding each cycle. Unlike menstrual blood, this has no route of exit. It becomes trapped, generating an intense local inflammatory response, forming adhesions (scar tissue that can bind organs together) and, on the ovaries, endometriomas (cysts filled with old, dark blood — “chocolate cysts”). The disease ranges from superficial peritoneal deposits to deeply infiltrating disease affecting the bowel, bladder and uterosacral ligaments. Disease stage does not reliably predict symptom severity — minimal disease can cause severe symptoms; extensive disease is occasionally asymptomatic.
Symptoms That Should Never Be Dismissed
Dysmenorrhoea severe enough to require strong analgesia, time off work or school, or that has progressively worsened over years — this is not normal. Chronic pelvic pain outside of menstruation. Dyspareunia (painful sex, particularly with deep penetration — classic for uterosacral/pouch of Douglas involvement). Dyschezia (painful bowel movements, particularly at menstruation). Bladder symptoms at menstruation. Fatigue — often severe and underrecognised, driven by chronic inflammation, sleep disruption from pain, and possibly central sensitisation. Subfertility — approximately 30–50% of women with endometriosis experience difficulty conceiving.
OTC Pain Management
NSAIDs as first-line — ibuprofen (400mg 3× daily) or naproxen taken from the day before menstruation begins and continued regularly throughout the first 2–3 days. NSAIDs reduce prostaglandin production — the inflammatory mediators driving uterine cramping and, in endometriosis, the ectopic tissue inflammation. Starting before peak inflammation is significantly more effective than waiting for pain to peak. Heat therapy — a heat pad applied to the lower abdomen has comparable evidence to ibuprofen for period pain in some studies. Combining heat with NSAIDs is more effective than either alone. TENS (transcutaneous electrical nerve stimulation) — high-frequency TENS provides evidence-based analgesia for period pain by blocking pain signals in peripheral nerves.
Anti-Inflammatory Nutrition
Endometriosis is fundamentally an inflammatory disease. An anti-inflammatory diet may reduce the inflammatory burden and symptom severity: prioritise omega-3 fatty acids (oily fish 2+/week, or algae-based DHA/EPA supplement 2g+ daily — reduces prostaglandin production); increase polyphenol-rich foods (berries, dark leafy greens, olive oil, turmeric); reduce red and processed meat (associated with higher endometriosis risk in cohort studies); reduce refined sugar and ultra-processed food; increase fibre (supports oestrogen excretion via the gut — addressing the oestrogen dominance component of endometriosis).
Frequently Asked Questions About Endometriosis
How is endometriosis diagnosed?
Definitive diagnosis requires laparoscopy (keyhole surgery) with biopsy. NICE 2017 guidance allows clinical diagnosis (symptom pattern and examination) to justify medical treatment without requiring surgery in all cases. Transvaginal ultrasound identifies endometriomas and deeply infiltrating disease but misses superficial peritoneal deposits. MRI maps disease extent for pre-operative planning. CA125 is not a reliable diagnostic test — it has poor sensitivity and is non-specific.
Can endometriosis be cured?
There is no cure. Menopause causes regression of hormone-sensitive deposits but symptoms can persist, particularly with significant scarring or nerve involvement. Laparoscopic excision by an experienced endometriosis surgeon (at a BSGE-accredited centre) offers the best surgical outcome, with recurrence rates of 20–40% at 5 years. The focus of management is controlling symptoms, preserving fertility and preventing progressive damage.
Is severe period pain always endometriosis?
Not necessarily — other causes of severe dysmenorrhoea include adenomyosis (endometrial-like tissue within the uterine muscle), fibroids, and primary dysmenorrhoea (very high prostaglandin production without structural cause). However, dysmenorrhoea severe enough to cause significant functional impairment warrants investigation, not reassurance. If pain requires strong analgesia, causes days off work or school, and is progressive, a GP or gynaecology referral is appropriate regardless of specific diagnosis.
What does the NHS provide for endometriosis?
NHS provision includes medical management via GP (hormonal contraception, NSAIDs, GnRH analogues) and referral to gynaecology or specialist BSGE-accredited endometriosis centres for complex cases and surgical treatment. Waiting times vary significantly. Endometriosis UK (endometriosis-uk.org) provides excellent support resources and a helpline.
Browse pain relief products at Huncoat Pharmacy. Related: PCOS Guide, Omega-3 Anti-Inflammatory.
At Huncoat Pharmacy: Private prescription service, Hormonal treatment options, Browse pain relief.