Asymmetrical awake bruxism associated with multiple system atrophy


  • Gurusidheshwar M. Wali MD, DM

    Corresponding author
    1. Jawaharlal Nehru Medical College, and Karnatak Lingayat Education Society's Hospital and Medical Research Centre, Belgaum, Karnataka State, India
    • Department of Neurology, K.L.E. Society's Hospital and Medical Research Centre, Belgaum-590010, Karnataka State, India
    Search for more papers by this author

  • A videotape accompanies this article.


We describe a 51-year-old man who developed awake bruxism during the course of multiple system atrophy. Electromyographic studies revealed side-to-side amplitude asymmetry of the bursts of motor activity. The bruxism responded favourably to low-dose levodopa–carbidopa therapy. Possible mechanisms of this rare association are discussed. © 2003 Movement Disorder Society