Safety, effectiveness, and duration of effect of BOTOX after switching from Dysport for blepharospasm, cervical dystonia, and hemifacial spasm dystonia, and hemifacial spasm.

Abstract

BACKGROUND Local injection of botulinum toxin type A is first-line treatment of blepharospasm, cervical dystonia, and hemifacial spasm; however, there is uncertainty about the optimal dose of toxin for each indication as well as dose-conversion ratios that should be used when switching products in clinical practice. OBJECTIVE The goal of this study was to… (More)

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