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  • Title: [Treatment of blepharospasm with botulinum toxin].
    Author: Pikielny RT, Micheli FE, Fernández Pardal MM, Casas Parera I, Giannaula RJ, Gatto M.
    Journal: Medicina (B Aires); 1990; 50(2):129-34. PubMed ID: 2101846.
    Abstract:
    Blepharospasm is a relatively frequent cranial dystonia which may be seen either alone or related to orofacial-mandibular dystonia (Meige's syndrome). In its maximum degree it can cause functional blindness.Twelve patients with blepharospasm (4 essential and 8 Meige's syndrome) who had been previously treated unsuccessfully with drugs (trihexyphenidyl, biperiden, carbamazepine, lithium, baclofen, lisuride, imipramine, clonazepam and butyrophenones) were treated for 12 months with periocular injections of botulinum toxin (BOTOX). A "low" dose of 12,5 U per eye was employed. With this dose, eleven out of twelve patients experienced significant improvement which lasted from five to fifteen weeks. The only nonresponder obtained complete relief upon duplicating the dose. The only side effect was uni or bilateral ptosis in six patients which improved completely in seven to twenty one days. One patient developed a peripheral facial palsy with complete remission in nineteen days. No systemic side effects were noted. There was only one desertion from this study due to depression enhanced by prolonged (21 days) ptosis. All patients (including the deserter) agreed that treatment with BOTOX provided more relief than any other previous therapeutic method. Our results confirm those obtained by others but a more prolonged study is needed to better evaluate long term effects.
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