Cervical Dystonia: Anterocollis
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Anterocollis usually accompanies other forms of cervical dystonia such as rotational torticollis or laterocollis but may occur in isolation. Pure anterocollis sometimes occurs as a dystonic manifestation of multiple system atrophy. Anterocollis must be differentiated from “dropped head syndrome” in which a myopathy of the paraspinal extensor muscles is present which causes weakness of neck extension.
KeywordsPublic Health Internal Medicine Botulinum Toxin Multiple System Atrophy Extensor Muscle
CD-Anterocollis.mp4 (MP4 3,630KB)
The patient displays a mixed pattern of left laterocollis and torticollis. With eyes closed, she develops the slow appearance of anterocollis down and to the left side.