Although the mechanism of how dry needling works is not fully understood, two theories have been discussed. One, involves the change in blood flow that occurs from piercing the muscle. Trigger points have decreased blood flow. The second theory involves the change in the feedback loop from the nerve to the muscle. Dry needling may “reset” the system resulting in the reduction or elimination of the trigger point. The result of the technique can include pain reduction, increased movement and increased muscle strength.