Dry Needling involves a very thin needle being pushed through the skin in order to stimulate a trigger point in the muscle. It is used to release tight muscle bands that are associated with trigger points, or hard "knots" within a muscle that can cause a referral of pain over a larger area.
Generally, needle insertion isn't felt; the local twitch response or sudden slight contraction of the muscle may provoke a mild response. This is often described as an electric shock or a cramping sensation. A therapeutic response occurs which is a positive reaction.
During the Dry Needling treatment, patients often experience a feeling of heaviness or a pleasant feeling of relaxation. Following this treatment, some minor muscle soreness may be felt for 24-48 hours. The application of ice on the needling site along with drinking plenty of fluids will reduce any soreness.