Orbicular synkinesis after facial paralysis: Treatment with botulinum toxin
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Involuntary lid closure not rarely accompanies aberrant regeneration of nerve fibers after different types of facial paralysis. 23 patients with such synkinesis were treated with botulinum toxin injections into the orbicularis oculi muscle. After periocular injections all patients showed much improvement: a period of, on the average, 13 symptom-free weeks was followed by a period of minimal symptoms. There were only minor complications. Whenever repeated treatment is necessary, botulinum toxin proves to be an effective therapy for involuntary lid closure after defective healing following facial paralysis.
Key wordsAberrant regeneration Botulinum toxin Facial paralysis Orbicular synkinesis
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