Pain management in endometriosis is not a matter of finding one medication and taking it. It is a layered problem — involving prostaglandins, hormonal estrogen signalling, nerve sensitisation, pelvic floor dysfunction, and psychological amplification — and effective management typically addresses several of these layers simultaneously.
The evidence-based approach to endometriosis pain management uses NSAIDs for acute menstrual pain, hormonal suppression (pill, progestogens, or GnRH agents) for sustained disease management, and adjuncts (pelvic floor physiotherapy, pain psychology, anti-inflammatory nutrition) for the central sensitisation and lifestyle components. No single treatment is sufficient for moderate to severe disease.
Key Takeaways
- NSAIDs work by blocking prostaglandin synthesis — they are most effective when taken 1–2 days before pain onset, not after pain begins
- Hormonal treatments suppress ovarian cycling and estrogen-driven disease activity; they are the most reliably effective medical management for recurrent pain
- Hormonal treatments cannot be used when trying to conceive — a separate set of considerations applies for fertility-seeking patients
- Pelvic floor physiotherapy has strong evidence for reducing chronic pelvic pain in endometriosis, including pain that persists after surgical treatment
- Central sensitisation — nervous system amplification from prolonged pain — requires targeted approaches beyond medication alone (CBT, mindfulness, pain physiology education)
- Tracking pain in relation to treatment response is essential: without a documented baseline and symptom log, it’s difficult to know whether a treatment is working
Step 1: NSAIDs — The Starting Point for Acute Pain
Non-steroidal anti-inflammatory drugs (NSAIDs) — ibuprofen, naproxen, diclofenac, mefenamic acid — are the recommended first-line treatment for acute endometriosis-related menstrual pain in most national guidelines, including those from NICE (UK), ACOG (US), and ESHRE (Europe).
NSAIDs work by inhibiting cyclooxygenase (COX) enzymes, which are responsible for producing prostaglandins. Since prostaglandins drive the cramping and inflammation of menstrual pain in endometriosis, reducing their synthesis directly addresses the mechanism.
The critical nuance is timing. NSAIDs are far more effective when taken prophylactically — 24–48 hours before expected pain onset — than reactively once severe pain has already established. Prostaglandin production ramps up before and during the onset of menstruation; if you wait until the pain is severe, you are catching up to a process that is already underway.
Practical approach:
- If you have predictable cycle timing, begin taking ibuprofen (400mg every 6–8 hours, with food) or naproxen (500mg twice daily) 1–2 days before expected menstruation
- Continue for the first 2–3 days of menstruation when prostaglandin production is highest
- Mefenamic acid (Ponstan) is specifically indicated for dysmenorrhoea and inhibits both prostaglandin synthesis and activity
For many people with mild to moderate endo, optimised NSAID use — meaning correct timing and adequate dosing — represents a significant improvement over taking medication only after pain becomes severe. If NSAIDs at correct doses and timing provide inadequate control, this is clinical evidence for escalating to hormonal management.
Step 2: Hormonal Suppression — The Sustained Solution
Endometriosis is an estrogen-dependent disease. Lesions respond to the monthly estrogen cycle by becoming active, producing inflammatory cytokines, bleeding, and growing. Hormonal suppression interrupts this cycle, reducing disease activity and, in most people, significantly reducing pain over time.
Combined Oral Contraceptive Pill
The combined pill — used continuously (skipping the pill-free or placebo week to suppress withdrawal bleeds) — is typically the first hormonal treatment offered. Continuous use is key: the pain-free week is actually the pill-free week, when estrogen withdrawal triggers the equivalent of a period in someone without endo. Avoiding this week avoids the monthly trigger.
The combined pill doesn’t cure endometriosis, but for many people with mild to moderate disease, it substantially reduces menstrual pain, bowel symptoms, and cycle-driven flares. It takes 3–6 months of continuous use before full benefit is apparent.
Progestogens
Progestins (synthetic progestogens) suppress endometriosis by opposing estrogen signalling and promoting decidualisation and atrophy of lesion tissue. Options include:
- Norethisterone (norethindrone): continuous low-dose, widely available, can cause breakthrough bleeding initially
- Dienogest (Visanne, Zafgen): a newer progestogen with strong evidence specifically for endometriosis pain; licensed for endo in many countries
- Medroxyprogesterone acetate (Depo-Provera): injectable, highly effective for pain suppression, but causes irregular bleeding initially and requires consideration of return-to-fertility timing
- Levonorgestrel IUD (Mirena): delivers progestogen locally to the uterus, reducing menstrual bleeding and pain with minimal systemic effects; strong evidence for adenomyosis and endo-related dysmenorrhoea
Progestogens are particularly useful for people who cannot tolerate estrogen-containing contraceptives (migraine with aura, VTE history, etc.), and for older reproductive-age patients.
GnRH Agonists and Antagonists (Second Line)
GnRH agonists (leuprolide/Lupron, nafarelin, buserelin, goserelin) and GnRH antagonists (elagolix/Orilissa, relugolix) are the most potent medical suppression available for endometriosis. They create a temporary, reversible state of medical menopause by suppressing ovarian estrogen production.
This is highly effective for pain — clinical trials consistently show 60–80% reduction in endometriosis pain measures — but comes with menopausal side effects: hot flushes, sleep disruption, vaginal dryness, and with long-term use (>6 months for agonists), bone density reduction. Add-back therapy (low-dose estrogen and/or progestogen) is co-prescribed to manage side effects while maintaining most of the pain benefit.
GnRH agents are typically used in two situations:
- As a diagnostic tool (if pain resolves on GnRH treatment, it strongly suggests hormonal driver, consistent with endo)
- As pre- or post-surgical adjuncts, or when first-line options have failed
GnRH antagonists (elagolix) have the advantage of oral dosing and more immediate onset/offset compared to injected agonists, offering more flexibility.
Step 3: Pelvic Floor Physiotherapy
This is consistently underutilised and consistently evidence-backed. After years of chronic pelvic pain, the pelvic floor muscles become hypertonic — locked in a state of protective over-contraction that itself produces pain, dyspareunia, and bowel and bladder symptoms. This muscle dysfunction persists even after surgical removal of lesions.
A pelvic health physiotherapist specialising in chronic pelvic pain and endometriosis can:
- Assess and treat pelvic floor muscle tension and dysfunction
- Address the nerve sensitisation patterns in the pelvis
- Provide manual therapy, biofeedback training, and graded exercises
- Reduce dyspareunia independent of hormonal management
- Work alongside medical or surgical management rather than instead of it
Multiple systematic reviews support pelvic floor physiotherapy for chronic pelvic pain. For endometriosis specifically, the combination of physiotherapy and medical management consistently outperforms medical management alone on pain and quality of life measures. Most specialist endo centres include pelvic physiotherapy as a core component of multidisciplinary care.
Access varies: self-referral to a women’s health physiotherapist is possible in many countries; GP or gynaecologist referral is often available through the same route.
Step 4: Pain Psychology and Central Sensitisation
Central sensitisation — the state in which the nervous system becomes persistently amplified after prolonged pain exposure — is present in a significant proportion of people with chronic endometriosis pain. Once central sensitisation develops, pain can persist and escalate even when lesion burden is reduced, because the amplified nervous system is now the pain generator rather than just the lesion itself.
Cognitive Behavioural Therapy (CBT) for chronic pain addresses the cognitive and behavioural patterns — catastrophising, avoidance, helplessness — that intensify pain and reduce function in central sensitisation. It doesn’t claim that pain is “in the mind”; it addresses the real neurobiological amplification that prolonged pain creates in the nervous system.
Pain physiology education — learning about central sensitisation and how nervous system sensitisation works — has evidence for reducing pain intensity and fear-avoidance behaviour in chronic pain populations, including those with endo.
Mindfulness-based approaches (MBSR) help reduce the anxiety-pain cycle, where pain-related anxiety lowers pain threshold, making subsequent flares more severe. See our article on endometriosis and mental health for a deeper exploration of these mechanisms.
Step 5: Anti-Inflammatory Lifestyle Approaches
While diet and lifestyle are not a replacement for medical management, they address the systemic inflammatory environment in which endometriosis operates and can meaningfully reduce symptom burden.
Anti-inflammatory nutrition: Reducing red meat, alcohol, refined carbohydrates, and inflammatory seed oils; increasing omega-3 fatty acids (oily fish, flaxseed), polyphenol-rich vegetables, and fibre. See our endometriosis diet guide for a research-grounded overview.
Sleep: Poor sleep raises the pain threshold (lowers pain tolerance) and worsens fatigue. Addressing sleep quality through pain management and sleep hygiene has a downstream benefit on pain experience.
Stress management: Stress raises cortisol and reduces the body’s natural anti-inflammatory mechanisms. Targeted stress management (not vague advice to “relax,” but structured approaches like MBSR or therapist-supported stress reduction) has pain benefit.
Heat therapy: Heat packs on the abdomen and lower back reduce muscle spasming and prostaglandin-driven cramping during flares. Simple and consistently effective for symptomatic relief.
Tracking Treatment Response
Without a documented baseline and ongoing symptom log, it is difficult to tell whether a treatment is working, partially working, or not working. Pain is notoriously difficult to recall accurately — three months of taking a new pill feels different to each person, and impressionistic recall at an appointment (“I think it’s a bit better”) is not the same as actual data.
EndoTracking tracks daily pain scores, pain location, medication use, and cycle phase — making it possible to compare pain levels before and after starting a new treatment, to identify whether hormonal management has flattened the cyclical peaks, and to bring objective evidence to your next appointment rather than trying to reconstruct three months of experience from memory.
This data changes the clinical conversation. “Here is my pain log for the three months before starting this treatment and the three months after” is a far more useful communication than “I feel a bit better, I think.”
EndoTracking is a personal health tracking app and does not provide medical advice. All medication decisions should be made with a qualified healthcare provider.