Unusual position-sensitive jaw tremor responsive to botulinum toxin

Authors

  • Daniel Tarsy MD,

    Corresponding author
    1. Parkinson's Disease and Movement Disorders Center, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
    • Beth Israel Deaconess Medical Center, KS 228, 330 Brookline Avenue, Boston, MA 02215
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  • Susie I. Ro MD

    1. Parkinson's Disease and Movement Disorders Center, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
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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. © 2005 Movement Disorder Society

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