Blepharospasm is a focal dystonia characterized by involuntary, repetitive eye closure.
Orofacial and oromandibular dystonia describe involuntary dystonic movements of orofacial
and oromandibular musculature. Hemifacial spasm is characterized by repetitive synchronous
contraction of facial nerve innervated muscles on one side of the face. In this article,
the clinical presentation, epidemiology, and approaches to treatment are reviewed.
Technical aspects of using botulinum toxin for treatment and reported outcomes are
discussed.
Keywords
blepharospasm - orofacial dystonia - oromandibular dystonia - hemifacial spasm - Meige's
syndrome - botulinum toxin