Myofascial Pain and Central Sensitization

Inclusion Criteria: * English-speaking participants * Diagnosed by their physician with non-acute (more than two weeks) neck and/or shoulder girdle primary myofascial pain * Referred to a physical therapy treatment. Exclusion Criteria: * In an effort to reduce the potential that another medical condition could lead to a secondary myofascial pain response, extensive comorbid exclusion criterion. * Use of chronic high-dose opioid medication greater than 100 mg oral morphine equivalents per day. * Individuals receiving or applying for compensation or disability. * The inability to provide informed consent. * Severe physical impairment (e.g., blindness, deafness) * Co-morbid medical condition limiting function (e.g., malignant cancer) * Reported illicit drug use * Severe psychiatric condition that would limit judgment. * Lack of internet access.