LED red light therapy for relief of primary dysmenorrhea: An open, single-group target value clinical trial.
PLoS OneSep 1, 2026 (epub)
Bin Yi, Dandan Wang, Ling Wei et al.
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In 30 seconds
This open, single-group clinical trial evaluated the efficacy and safety of LED red light therapy in 119 patients with primary dysmenorrhea. After three menstrual cycles, the mean reduction in Visual Analog Scale (VAS) scores was 63.62%, indicating significant pain relief. The overall effective rate of the therapy was 98.32%.
Key findings
- Mean reduction in VAS score was 63.62% after three cycles of treatment.
- Overall effective rate of LED red light therapy was 98.32%.
- Total COX Menstrual Symptom Scale score decreased by 72.93%.
- Only one adverse event (0.84%) was device-related.
Why it matters
The findings suggest that LED red light therapy could be a safe and effective non-invasive option for managing primary dysmenorrhea, potentially improving quality of life for affected patients.