Background and Objectives: The purpose of the present study was to examine the effectiveness of dry needling as local treatment of upper trapezius trigger points related to chronic neck pain on pain and pain pressure threshold in women with chronic nonspecific neck pain. Methods: Thirty females with an active myofascial trigger point of the upper trapezius muscle were randomly divided into two groups: dry needling with passive stretch (n=15) and passive stretch alone (n=15). They received 5 sessions of the intervention for three weeks. The outcomes were pain intensity and pain pressure threshold. Every outcome was recorded at baseline and 2 days after the fifth session. Results: Significant improvement in pain and pain pressure threshold was observed in both groups (P=0.0001) after the treatment. The results of the independent t-test showed a significant difference in measurements between the dry needling and passive stretch groups (P<0.05). Conclusion: Dry needling with passive stretch can be more effective on pain and pain pressure threshold than passive stretching alone in short term in women with nonspecific neck pain.

Background & Objectives: Myofascial Trigger Point (MTrP) is one of the most common musculoskeletal disorders. The MTrP includes highly sensitive points within a taut band, is painful to palpation, and causes pain in a specific pattern. The MTrP is more prevalent in the upper trapezius muscle because this muscle plays an important role in maintaining the posture of the head and neck. This study aimed to compare the effects of dry needling and high-intensity laser therapy on the clinical signs of females with active trigger points in the upper trapezius muscle. Methods: Thirty females with the active MTrP of the upper trapezius muscle were randomly assigned into two groups: high-intensity laser therapy group (n=15) and dry needling group (n=15); they received the interventions in five sessions for three weeks. The outcome measures included pain intensity and pain pressure threshold, which were assessed before and two days after the interventions. Results: In both study groups, the scores of the visual analogue scale of pain were significantly decreased, also, the pain pressure threshold was significantly increased (P=0.001), after the treatment. However, the two groups did not significantly differ in any of the outcome measures (P>0.05). Conclusion: Both high-intensity laser therapy and dry needling can be employed to treat the MTrP of the upper trapezius muscle. Considering the effectiveness of the two treatments, each of the methods can be alternatively selected for these patients.