Trigger point is a condition when a muscle fails to relax normally and forms/creates a tight, ropy area of the muscle known as a “knot.” A trigger point can irritate and inflame surrounding nerves, which can then cause referred pain to another part of the body. If not treated, a trigger point can develop scar tissue and cause a loss of range of motion and general muscle weakness. A trigger point injection consists of injection of a local anesthetic and possibly depo-steroid medications. These trigger point injections have been shown to be one of the most effective treatments for painful trigger points providing nearly instant and prolonged pain relief.