Cephalalgia : an international journal of headache
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Randomized Controlled Trial Comparative Study Clinical Trial
Botulinum toxin A in the prophylactic treatment of migraine--a randomized, double-blind, placebo-controlled study.
Botulinum toxin A has been suggested to be effective in the prophylactic treatment of migraine. However, only very few randomized, double-blind, placebo-controlled studies are available. We designed such a study with a specific focus on different injection sites. ⋯ Our study did not show any efficacy of botulinum toxin A in the prophylactic treatment of migraine. Only accompanying symptoms were significantly reduced in the 16 U but not in the 100 U treatment group. Future studies should focus on the efficacy of botulinum toxin A in specific subgroups of patients, on the efficacy of repetitive injections, and on other injection sites.