Emerging concepts in the treatment of myofascial pain: a review of medications, modalities, and needle-based interventions.

Significant developments and changes in the use of interventions and treatments for the management of myofascial pain syndrome have occurred in the past 10 years. These emerging concepts have changed the approach for clinicians who manage these pain disorders. However, wide variations in practice patterns prevail, and no clear consensus exists regarding when and how to use these interventions; in addition, awareness of the evidence basis behind their use is limited.