Acupuncture as a pain-relieving modality for provoked vestibulodynia

This case report describes the treatment of a 30-year-old woman with provoked vestibulodynia (PVD), a chronic vulvar pain condition that significantly affects quality of life and intimate relationships. PVD is characterized by intense pain, burning, and irritation in the vulvar region with touch or attempted vaginal penetration, particularly at the vulvar vestibule. The patient had been symptomatic for 3 years, with onset during a period of significant stress, including professional pressure, pregnancy termination, and recurrent vaginal infections. On initial examination, significant hypertonicity of the pelvic floor muscles, active myofascial trigger points, and hypersensitivity at the vulvar vestibule were identified, suggesting central sensitization.

Treatment combined acupuncture with conventional physical therapy, including muscle reeducation, general relaxation, and manual trigger point release. The acupuncture approach was based on both traditional Chinese medicine principles and the Western understanding of pain mechanisms. Specific points were selected: LR-3 and LI-4 (known as the Four Gates) for potent analgesic effects and treatment of centrally sensitized pain; SP-6 as a key point for gynecologic issues and to eliminate stagnation; SP-9 to reduce genital spasms; SP-10 for its anti-inflammatory effects; and the auricular Shenmen point to prolong therapeutic effects. The protocol included five sessions, with additional points being progressively incorporated according to patient response.

Outcomes were measured by the National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI), adapted for women, and a simple Likert scale. Significant improvements were seen across all NIH-CPSI domains: the pain score decreased from 8 to 6 (out of a possible 23 points), urinary symptoms from 3 to 1 (out of 10 points), and quality-of-life impact from 12 to 7 (out of 12 points). The total reduction of 9 points exceeded the threshold of 6 points considered clinically significant. In addition to objective improvements, the patient reported increased general well-being, better sleep, more energy, and reduced stress.

Objectively, there was a reduction in pelvic floor muscle hypertonicity, improved range of motion, and improved muscle relaxation capacity. During the fifth session, manual release of myofascial trigger points became possible, which was not initially tolerated. Proposed mechanisms for the effects of acupuncture include local actions through increased blood flow and a controlled pro-inflammatory response, segmental effects via gate control theory and release of endogenous opioids, and supraspinal effects through the release of hormones and neuropeptides that inhibit pain and promote well-being. The existing literature, although limited, supports these findings.

Two small pilot studies demonstrated similar benefits of acupuncture for PVD, with significant improvements in pain, sexual function, and quality of life. The Curran et al. (2010) study showed statistically significant reductions in helplessness and pain with manual stimulation after 10 sessions. Schlaeger et al.

(2015) demonstrated significant reductions in vulvar pain and dyspareunia using a standardized protocol. The clinical implications suggest that acupuncture may be a valuable adjunct in the multimodal treatment of PVD, especially considering its beneficial systemic effects on stress, sleep, and general well-being. The individualized approach based on structured clinical reasoning proved promising, allowing treatment adaptation according to patient response.