OBJECTIVE[corrected] To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disorders such as sialorrhea and hyperhidrosis.

METHODSA retrospective study of BTX-B injections in treatment of 58 patients with various neurological disorders was performed. The mean follow-up time was 0.9 +/- 0.8 years. Results of the first and last treatment of patients with at least 3 injection sessions were compared.

RESULTSThe response of 58 patients to a total of 157 BTX-B treatment sessions was analyzed. Of the 157 treatment sessions, 120 sessions (76.4%) resulted in moderate or marked improvement while 17 sessions (10.8%) had no response. The clinical benefits after BTX-B treatment lasted an average of 14 weeks. Of the 41 patients with at least 3 injection sessions (mean 10 +/- 8.6), most patients needed increased dosage upon the last session compared to the first session. Nineteen patients (32.8%) with 27 sessions (17.2%) reported adverse effects with BTX-B treatment.

CONCLUSIONSThough most patients require increased dosage to maintain effective response after repeated injections, BTX-B is an effective and safe treatment drug for a variety of movement disorders, as well as drooling and hyperhidrosis.

Anti-Dyskinesia Agents ; administration & dosage ; therapeutic use ; Blepharospasm ; drug therapy ; Botulinum Toxins ; administration & dosage ; therapeutic use ; Botulinum Toxins, Type A ; Follow-Up Studies ; Humans ; Hyperhidrosis ; drug therapy ; Injections ; Meige Syndrome ; drug therapy ; Movement Disorders ; drug therapy ; Retrospective Studies ; Sialorrhea ; drug therapy ; Torticollis ; drug therapy