Orofacial Dystonia with Lower Facial and Platysma Dystonia
Lower facial dystonia produces abnormal movements and postures of the lower face which are often associated with contractions of the platysma. Similar to other facial dystonias which cause puckering or pursing of the lips, speech often activates the movements thereby causing dysarthria. Lower facial dystonia is often accompanied by anterocollis. Differential diagnosis is similar to other forms of orofacial dystonia (see Chap. 47). Treatment is usually limited to injections of botulinum toxin into the affected muscles. Care must be exercised with lower facial injections in order to avoid lip closure weakness which may produce drooling.
KeywordsPublic Health Internal Medicine Differential Diagnosis Botulinum Toxin Lower Face
OD w. lower facial & platysma dystonia.mp4 (MP4 4,094KB)
While speaking, the patient displays downward contractions of the corners of his mouth and active contractions of the platysma.