title: Unusual position-sensitive jaw tremor responsive to botulinum toxin.
abstract: We report on a woman with a focal position-sensitive jaw tremor present with the jaw held slightly open or while drinking from a cup. Electromyography demonstrated a rhythmic 5 Hz alternating tremor involving masseter and digastric muscles with normal reciprocal inhibition. The tremor was markedly reduced with botulinum toxin injections.
authors.affiliation: Parkinson's Disease and Movement Disorders Center, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA. dtarsy@bidmc.harvard.edu
authors.forename: Daniel
authors.initials: D
authors.lastname: Tarsy
authors.forename: Susie I
authors.initials: SI
authors.lastname: Ro
mesh_terms: D000368:Aged; D001905:Botulinum Toxins / Q000008:administration & dosage*; D004576:Electromyography; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D007571:Jaw Diseases / Q000188:drug therapy* / Q000503:physiopathology; D008410:Masticatory Muscles / Q000187:drug effects* / Q000503:physiopathology; D016896:Treatment Outcome; D014202:Tremor / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D001905:Botulinum Toxins