Menstrual low back pain (MLBP) is the most common complain of menstrual discomfort that responsible for highest number of absentees which results in work hours and economic loss for up to three days monthly. Laser Acupuncture (LA) is non-invasive technique used to activate pain-gate mechanisms without needles puncturing but with Laser.

Objective: To determine the effect of LA on MLBP, pain pressure threshold (PPT) and activities of daily living (ADL).

Methods: Thirty-two women suffering from MLBP were randomly divided into two equal groups: The intervention group (received LA) on the points (BL23, BL26, BL40, SP6) and the control group (received sham LA) on the same points (n = 16 each). Treatment was delivered 16 minutes per session, 3 sessions every menstrual cycle for 3 consecutive menstrual cycle. The severity of the pain was measured using a visual analogue scale (VAS). Also, the PPT was measured using pressure algometry. Additionally, person’s ability to perform her ADL was assessed throughout instrumental activities of daily living (IADL) questionnaire.

Results: There were statistically significant improvements (p < 0.05) in VAS, PPT and IADL in the intervention group (Group A) post treatment compered to pretreatment (p< 0.01). Regarding group comparisons, there was a significant improvement in VAS, PPT, and IADL of group A compared with that of group B post treatment (p = 0.001).