RESUMEN
Trigger points have been described as a cause of pain in clinical practice and an extremely source of musculoskeletal pain. Stretching can effectively inactive trigger points and provide symptomatic relief. This study compares muscle stretching immediately after inject of lidocaine vs. stretching with the ethyl chloride spray in the treatment of the trigger points. patients with trigger point in gluteal muscles were recruited using strict inclusion and exclusion criteria from Shiraz medical school clinics. Subjects under went 2 office visits and 2 phones follow up. In group A stretching was with spray of ethyl chloride and in group B stretching of muscle injected oone immediately after injection was done immediately after injection. Evaluation measure tools were 0-10 NRS, VAS and BPI. In respect to VAS and NRS there was statistical significance difference between both groups 1 month and 2 month after treatment. There was statistical significance difference between both groups in all measuremant aspect of BPI except [general activity and walking] one month after treatment. muscle stretching immediately after injection of lidocaine was more effective [at least up 2 month] than stretching after spray of the ethyl chloride in the symptomatic treatment of gluteal trigger points and improvement of functional activity of the patients