Premium
Sleep‐related faciomandibular myoclonus: A sleep‐related movement disorder different from bruxism
Author(s) -
Loi Daniela,
Provini Federica,
Vetrugno Roberto,
D'Angelo Roberto,
Zaniboni Anna,
Montagna Pasquale
Publication year - 2007
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.21661
Subject(s) - masticatory force , sleep bruxism , myoclonus , medicine , electromyography , tonic (physiology) , non rapid eye movement sleep , myoclonic jerk , neurological disorder , sleep (system call) , tongue , physical medicine and rehabilitation , psychology , orthodontics , electroencephalography , anesthesia , central nervous system disease , psychiatry , surgery , pathology , computer science , operating system
We describe a 33‐year‐old man who presented with lip and tongue nibbling and bleeding during sleep. Videopolysomnography revealed myoclonic jerks involving the masticatory and facial muscles recurring mainly during NREM sleep. There was no tonic EMG masticatory activity typical of bruxism. EMG analysis demonstrated the recruitment of V‐ to VII innervated muscles and, in half of the episodes, also the sternocleidomastoideus. Our patient had sleep‐related faciomandibular myoclonus (SFMM) with spontaneous jerks of oromasticatory and cervical muscles, occurring only during sleep. Tooth grinding, temporomandibular joint pain, abnormal tooth mobility, tooth wear, and other dental problems were clinically absent. We propose that, on the basis of the clinical and EMG features, SFMM may be considered a distinct disorder and different from sleep bruxism. © 2007 Movement Disorder Society