Hemifacial spasm

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Synonyms: Facial hemispasm | Focal myoclonus of face

A rare primary myoclonus characterized by progressive involuntary irregular clonic or tonic contractions of the muscles innervated by the facial nerve (cranial nerve VII). The symptoms are typically strictly unilateral mostly persist during sleep and often occur in the region of the orbicularis oculi muscle first and gradually spread to other parts of the affected half of the face as the disease progresses. Both familial and acquired forms are reported.

Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version June 2024

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Hemifacial spasm?

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