Peribuccal and pharyngeal myorhythmia as a presenting symptom of hypertrophic olivary degeneration

A 58-year-old woman underwent to a successful surgical treatment of a left cerebellar paravermian cavernous malformation. Seven months later she progressively developed involuntary contractions of the left peribuccal region. Neurological examination revealed repetitive, rhythmic, slow frequency jerks of the left corner of the mouth (Video, segment-1). She did not report swallowing difficulties, saliva pooling or ear clicks. However, a careful examination of the oral cavity revealed the presence of synchronous contractions of left pharyngeal muscles (Video, segment-2).

Source: Parkinsonism and Related Disorders - February 18, 2021 Category: Neurology Authors: Federica Assenza, Maurilio Genovese, Maria Paola Cabboi, Gaetano Salomone, Francesco Cavallieri, Franco Valzania Source Type: research