title: Treatment of primary writing tremor with botulinum toxin type a injections: report of a case series.
abstract: Primary writing tremor is a rare motor disorder in which tremor occurs primarily during writing and is not accompanied by other neurological symptoms and/or signs. Its etiopathogenesis is unknown, and treatment approaches remain largely empirical. Based on the effectiveness of botulinum toxin injections in writing dysfunction, we effectively used botulinum toxin type A for the treatment of primary writing tremor in a series of patients seen over a period of 5 years. Of the 5 patients, four received injections and reported significant and sustained treatment benefit for a period of at least 1 year. One patient declined botulinum toxin injections and responded moderately when treated with trihexyphenidyl.
authors.affiliation: Department of Neurology, University of Miami, Miller School of Medicine, Miami, FL 33136, USA. spapapetropoulos@med.miami.edu
authors.forename: Spiridon
authors.initials: S
authors.lastname: Papapetropoulos
authors.forename: Carlos
authors.initials: C
authors.lastname: Singer
mesh_terms: D000328:Adult; D000368:Aged; D019274:Botulinum Toxins, Type A / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009465:Neuromuscular Agents / Q000627:therapeutic use*; D014202:Tremor / Q000188:drug therapy*; D014956:Writing
chemical_list: D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A