Fibromyalgia is one of the most prevalent chronic widespread pain entities today. One of the most common problems in patients with fibromyalgia are alterations of the temporomandibular region, present in approximately 80% of the subjects, being, in turn, alterations of muscular origin the most common with a prevalence of 84%. One of the most promising therapeutic strategies is one that leads to self-management by the patient. The main objective of this study is to analyze the effect of a self-management program for myalgia in the temporomandibular region in subjects with fibromyalgia. For this, an experimental study of the uncontrolled Clinical Trial type will be carried out. Participants must be over 18 years of age, have a diagnosis of fibromyalgia and have myalgia or myofascial pain syndrome in the temporomandibular region. Demographic data, mandibular function, pain level, quality of life related to oral health, kinesiophobia, anxiety and depression, sleep, patient oral habits, catastrophizing, knowledge about pain, central sensitization, self-efficacy, coping with pain patient expectations, and patient satisfaction with the treatment received. An initial data collection will be carried out. The intervention will be carried out in 3 online sessions in which different pain processes will be explained, mandibular mobility exercises, masticatory muscle self-massage, as well as recommendations and advice on its pathology. Data will be collected again 4 weeks after the end of the program and at months 6 and 12. The appearance of adverse effects linked to the therapeutic program is not contemplated.