Abstract
Botulinum A toxin is recognized and approved for symptomatic treatment of hemifacial spasm and blepharospasm. The state of trials is good, although double-blind placebo-controlled studies have been carried out involving only a small number of cases. Open case control studies have been done with large patient collectives. In both indications, treatment with botulinum toxin reaches the highest EBM degree in a critical evaluation.
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Jost, W., Kohl, A. Botulinum toxin: evidence-based medicine criteria in blepharospasm and hemifacial spasm. J Neurol 248 (Suppl 1), I21–I24 (2001). https://doi.org/10.1007/PL00007813
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DOI: https://doi.org/10.1007/PL00007813