During the evaluation period, the participants' musculoskeletal pain threshold and tolerance will be measured using an algometer, about trigger points on the identified muscles (rectus abdominis, quadratus lumborum, erector spinae, and tibialis anterior). A total of 40 women, aged 18-40, diagnosed with primary dysmenorrhea by a gynecologist, will be included in the study. The initial assessment of the participants will be conducted on their most painful days. Participants will be randomized into two groups: the myofascial release technique group (study group) and the placebo myofascial release technique group (control group). The interventions will be conducted over 10 sessions during one menstrual cycle, and all evaluations will be repeated after the treatment period. The study will be conducted as a double-blind trial, ensuring that both the evaluators and the patients are blind to the group assignments.