Botulinum toxin is a well-known therapy for patients with diverse movement disorders. Its application has been extended to other disorders. Here, we document the case of a 70-year-old man with hemifacial spasm associated to trigeminal neuralgia secondary to an ectatic basilar artery. He was treated with botulinum toxin type A, 2.5 mouse units over five sites at the orbicularis oculi and one over the buccinator muscle. After botulinum toxin injections, relief was gained not only from twitching but also from pain. When the effects of the toxin vanished, spasms and pain recurred. Further infiltrations were given every 12 weeks following the same response pattern. This observation further validates the increasing role of botulinum toxin in pain management.
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