Botulinum toxin treatment of synkinesia following facial paralysis

We report ten patients with unilateral synkinesias after facial palsy treated with botulinum toxin injections. All patients suffered from extensive mass movements around the eye. After periocular injections all patients showed much improvement: a period of 11 weeks free of symptoms was followed by a 9-week period of minimal symptoms. There were no important complications. The use of botulinum toxin injections is an effective therapy for mass movements after defect healing of facial palsy.