Trigger Point Injections effectively treat the common cause of persistent pain in the jaw, neck, shoulder, back, and other areas of the body. A trigger point injection (TPI) is used as effective primary or supplemental therapy aimed at decreasing persistent pain and tightness in the musculoskeletal system. Additionally, they may be used to relieve chronic headaches associated with TMJ, migraine, and other head and neck pain conditions. But what exactly are they, and how do you know if you’d benefit from this treatment? This article will answer your questions.