Botulinum Toxin as a Treatment for Blepharospasm, Spasmodic Torticollis and Hemifacial Spasm

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Abstract
Fifty-two patients affected by focal dystonia or hemifacial spasm were treated with repeated injections of botulinum toxin. A clinical improvement was observed in all patients with blepharospasm; clinical benefit had a mean duration of 10 weeks. Clinical results were less impressive, but also favorable in patients affected by spasmodic torticollis and by hemifacial spasm. In the latter, the incidence of drug-induced paresis was much higher than that observed in patients with blepharospasm, even though the doses of toxin injected were significantly lower.

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