Dual Frequency Low-Level Laser Therapy in Myofascial Trigger Points of Upper Trapezius

Brief Summary

The goal of this clinical trial is to determine whether dual frequency low-level laser therapy can reduce pain, improve function, and increase neck movement in patients with myofascial trigger points in the upper trapezius muscle. The study includes men and women aged 20 to 55 years who have been diagnosed with upper trapezius myofascial pain syndrome. The main questions it aims to answer are: * Does dual frequency low-level laser therapy reduce pain more effectively than single wavelength laser therapy? * Does dual frequency low-level laser therapy improve functional ability and cervical range of motion more than other treatments? Researchers compared three groups of participants receiving different treatments to evaluate their effects. Participants were randomly assigned to one of three groups: * Group A received red wavelength low-level laser therapy with conventional physiotherapy * Group B received infrared low-level laser therapy with conventional physiotherapy * Group C received dual frequency low-level laser therapy with conventional physiotherapy All participants received treatment twice weekly for four weeks. Conventional therapy included stretching exercises, strengthening exercises, and postural correction.