What is the role of botulinum toxin injection in the treatment of hemifacial spasm?

Updated: Sep 16, 2019
  • Author: Steven Gulevich, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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The treatment of choice for hemifacial spasm is botulinum toxin injection of botulinum toxin under EMG guidance. Side effects of botulinum toxin injection (eg, facial asymmetry, ptosis, facial weakness) usually are transient. Most patients report a highly satisfactory response. Caution patients that although botulinum toxin ablates the muscular spasm, the sensation of spasm often persists. [9, 10]

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