We have reported a case series of five patients with jaw-opening oromandibular dystonia secondary to Wilson's disease (WD), in which the patients were treated with botulinum toxin type A (BTX-A). In all cases, dystonia score was partially reduced three weeks after injections. The most common side effect was transient mild dysphagia. This preliminary study showed that jaw-opening oromandibular dystonia in WD may be partially responsive to the use of BTX-A.
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Teive, H. A. G., Klüppel, L. E., Munhoz, R. P., Becker, N., Müller, P. R., & Werneck, L. C. (2012). Jaw-opening oromandibular dystonia secondary to Wilson’s Disease treated with botulinum toxin type A. Arquivos de Neuro-Psiquiatria, 70(6), 407–409. https://doi.org/10.1590/S0004-282X2012000600005