Isolated mandibular sleep-related rhythmic movement disorder: A case report.

Röthlisberger, Sandra C.; Zubler, Frédéric (2022). Isolated mandibular sleep-related rhythmic movement disorder: A case report. Cranio : the journal of craniomandibular practice, 40(3), pp. 229-231. Taylor & Francis 10.1080/08869634.2020.1747715

Text Roethlisberger, 2020, Isolated mandibular sleep related rhythmic movement disorder.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (798kB) | Request a copy

Background: Rhythmic masticatory muscle activity (RMMA) in sleep is usually not considered pathological unless associated with bruxism. On the other hand, so-called sleep-related rhythmic movement disorders (SRRMD) are a recognized category of sleep disorders, which involve prolonged rhythmic activity of large muscle groups, such as the whole body, the head, or a limb, but typically not the masticatory muscles.Clinical Presentation: A polysomnographic description of a patient with symptomatic RMMA without bruxism, fulfilling the diagnostic criteria of an SRRMD, is presented. The symptoms were initially misdiagnosed as bruxism and then as sleep-related epilepsy, which delayed an adequate treatment. Therapy of the comorbid obstructive sleep apnea with a positive airway pressure device (APAP) led to a self-reported improvement.Conclusion: The differential diagnosis of jaw movement in sleep is vast; a correct diagnosis is of the essence for adequate treatment. The prevalence of isolated RMMA resulting in perturbation of sleep warrants further exploration.

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