The Benefits of an Integral HAMMAM Experience Combining Hydrotherapy and Swedish Massage on Pain, Subjective Well-Being and Quality of Life in Women with Endometriosis-Related Chronic Pelvic Pain: A Randomized Controlled Trial.

The short version

This randomized controlled trial with 44 women explored whether a four-week "HAMMAM" program -- combining hydrotherapy (therapeutic water bathing at varying temperatures) and Swedish massage (a full-body technique using kneading, stroking, and tapping to relax muscle tissue and improve circulation) -- could ease pain in women with endometriosis-related chronic pelvic pain that had not improved with standard medical treatment. Endometriosis is a condition where tissue similar to the uterine lining grows outside the uterus, commonly causing pain during menstruation (dysmenorrhea, governing cyclical cramping) and intercourse (dyspareunia) that standard analgesics and hormonal therapy fail to relieve in roughly a third to half of patients. Women aged 20-50 with confirmed endometriosis and pelvic pain rated at least 4 out of 10 were randomly assigned to the HAMMAM group (21 women) or a control group continuing usual care (23 women) at a hospital in Granada, Spain. The HAMMAM group attended three 90-minute sessions over four weeks at a bathhouse: a 60-75 minute circuit of warm, hot, and cold water baths plus a steam room, then a 15-minute Swedish massage with essential oils; the last session added a traditional exfoliating scrub. Pain was measured on a 0-10 scale, and pressure sensitivity with a handheld algometer. The HAMMAM group reported significantly less menstrual pain (p = 0.035, a large effect) and pain during intercourse (p = 0.020, a moderate-to-large effect) after the program compared with the control group. Pain interfering with sleep also dropped notably (p = 0.018), and pressure pain thresholds in the pelvic region rose (p = 0.029, meaning the area became less sensitive to pressure -- a sign of reduced pain sensitization), with the strongest change at the left groin ligament (p = 0.006). Everyone attended all sessions (100% adherence) and rated satisfaction at 9.71 out of 10, with no adverse events. However, overall pelvic pain ratings, catastrophic thinking about pain, general subjective well-being, and endometriosis-specific quality of life did not change significantly, showing the benefits were concentrated in specific pain measures rather than global wellness. For women whose endometriosis pain persists despite conventional treatment, this suggests a short, low-intensity spa-style program combining water therapy and massage may meaningfully ease menstrual and intercourse pain and pain-disrupted sleep, with high satisfaction and no safety concerns. Because hydrotherapy and massage were only tested together, it is not yet known which component -- or their combination -- drives the benefit, and the small, single-site sample limits how broadly these results apply. Larger trials testing each therapy alone are needed before firm clinical recommendations can be made.

Key findings

• A four-week program combining hydrotherapy (therapeutic warm, hot, and cold water bathing) with Swedish massage (a full-body relaxation massage) significantly reduced menstrual pain and pain during intercourse in women with endometriosis-related pelvic pain that had not responded to standard treatment.
• The improvement in menstrual pain was large (Cohen's d = 0.80, a standardized measure of effect size where values above 0.8 are considered large) and the improvement in pain during intercourse was moderate (d = 0.62).
• Participants also slept better and showed reduced pain sensitivity in the pelvic area, measured with a pressure algometer (a device that presses on the skin to find the point where pressure starts to feel painful).
• The program did not significantly improve overall well-being, pain catastrophizing (excessive worry or rumination about pain), or endometriosis-specific quality of life, so its benefits appear to be pain-specific rather than global.
• Because hydrotherapy and massage were tested only in combination, with no group receiving either therapy alone, it is not yet known which component drives the benefit.

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