Medical Acupuncture and Cognitive Behavioural Therapy in Holistic Pain Management for Endometriosis-A Narrative Review of Mechanisms, Evidence and Integrated Clinical Application

Abstract

Endometriosis is a chronic inflammatory condition affecting approximately 1 in 10 people assigned female at birth in the United Kingdom, characterised by endometrial-like tissue growing outside the uterus. It causes persistent pelvic pain, dysmenorrhoea, dyspareunia, dyschezia, and systemic symptoms including fatigue and bloating, alongside significant psychological morbidity including anxiety, depression, and pain catastrophising. A bidirectional relationship exists: physical pain amplifies psychological distress, which in turn augments pain perception through central sensitisation and descending pain modulation pathways. Conventional pharmacological and surgical interventions often provide incomplete relief and carry significant side effect burdens, creating a need for integrated, person-centred approaches that address both physiological and psychological dimensions of suffering. This narrative review synthesises the evidence and clinical rationale for combining medical acupuncture and Cognitive Behavioural Therapy (CBT) as complementary interventions within a biopsychosocial model of holistic pain management for endometriosis. Drawing on systematic reviews, meta-analyses, randomised controlled trials, and national clinical guidelines, this paper examines the distinct and synergistic mechanisms of action, evaluates the current evidence base, and proposes an integrated clinical protocol for implementation in UK practice. Medical acupuncture modulates pain through multiple biological pathways: stimulation of endogenous opioid release; reduction of pro-inflammatory cytokines; improvement of pelvic circulation and reduction of venous congestion; neuromodulation of spinal and supraspinal pain processing; and regulation of prostaglandin synthesis and hypothalamic-pituitary-ovarian axis activity. CBT targets the cognitive-behavioural cycle of pain through: cognitive restructuring to reduce catastrophising and fear-avoidance behaviours; pain neuroscience education to normalise central sensitisation; graded activity pacing to replace the boom–bust cycle; relaxation and stress reduction to lower cortisol and pelvic floor muscle guarding; and development of pain self-efficacy. A 2024 systematic review and meta-analysis of 14 studies (n = 793) found acupuncture significantly reduced overall pelvic pain, dysmenorrhoea, and dyspareunia. A 2025 network meta-analysis of 33 randomised controlled trials (n = 2,323) confirmed acupuncture's particular benefit for non-cyclic pelvic pain (SMD = −4.53). The 2026 Healing Pelvic Pain Intervention (HaPPI) randomised controlled trial demonstrated that 8-week telehealth CBT produced large clinically meaningful improvements in endometriosis-specific quality of life, pain intensity, pain catastrophising, and psychological distress (Cohen's d = −0.28 to −0.93). National Institute for Health and Care Excellence (NICE) guidelines recommend CBT as first-line non-pharmacological management for chronic primary pain, while acupuncture is recognised as an adjunct with low-to-moderate evidence quality but consistent clinical benefit. Combining medical acupuncture and CBT creates a dual-action biopsychosocial intervention: acupuncture reduces nociceptive input and inflammation, lowering the physiological pain signal; CBT concurrently modulates top-down pain processing, emotional response, and behavioural function. This synergy breaks the pain–stress–pain cycle, with clinical benefits emerging after 6–8 weeks of combined care, offering immediate symptomatic relief alongside sustained long-term resilience and coping skills. Both interventions are best delivered as adjuncts to standard medical and surgical care, with medical cupuncture provided by HCPC-registered practitioners with appropriate British Medical Acupuncture Society (BMAS) training and CBT accessible via NHS Improving Access to Psychological Therapies (IAPT) services or qualified independent therapists. In conclusion, endometriosis pain is a multifaceted experience shaped by interconnected biological, psychological, and social factors. Medical acupuncture and CBT target complementary pathways - one modulating the body's pain signalling systems, the other transforming how pain is perceived, interpreted, and managed. Current evidence supports their integration within a holistic, person-centred care plan, offering an empowering, evidence-informed foundation for reducing pain, improving quality of life, and restoring wellbeing for people living with endometriosis. Further large-scale, placebo-controlled trials evaluating combined interventions are warranted to strengthen the evidence base and inform future clinical guidance.