Trigger point injections provide prompt, symptomatic relief to painful areas of muscle containing small, contracted knots called trigger points. These injections may contain a local anesthetic, saline solution or corticosteroid for optimal relief. When administered, a trigger point injection can loosen and subsequently eliminate the hard, palpable nodes. A dry-needle technique may also be used if the patient does not require the trigger point injection solution. Trigger point injections can be used on many muscle groups and are effective in treatment of fibromyalgia, tension headaches and myofascial pain syndrome.