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Dystonic Tremor

  • Roongroj Bhidayasiri
  • Daniel Tarsy
Chapter
Part of the Current Clinical Neurology book series (CCNEU)

Abstract

Dystonic tremor refers to the presence of tremor in a body part which is also affected by dystonia. Dystonic tremor is usually irregular, focal, variable in amplitude, and relatively low in frequency (usually less than 7 Hz). When it affects the limbs, dystonic tremor is usually a postural and/or kinetic tremor which is usually absent at rest. A common example of dystonic tremor is the irregular and jerky head tremor which often accompanies cervical dystonia (see Chap. 40). The precise relationship of dystonic tremor to dystonia has been debated. Dystonic movements may be inherently tremulous in nature due to co-contraction of agonist and antagonist muscles.

Keywords

Public Health Internal Medicine Body Part Movement Disorder Botulinum Toxin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Supplementary material

Dystonic tremor.mp4 (19,808KB)

Clip 1: the patient exhibits a complex cervical dystonia producing left rotational torticollis, right laterocollis, and right shoulder elevation. The dystonic head posture is associated with mixed vertical (“yes-yes”) and horizontal (“no-no”) tremulous and jerky head movements. Clip 2: another patient displays a continuous jerky postural and rest tremor in right upper extremity in a variety of positions. The tremor appeared in early childhood on a background of perinatal distress and forceps delivery. Botulinum toxin has shown partial improvement in the tremor.

References

  1. 1.
    Deuschl G, Bain P, Brin M, et al. Consensus statement of the Movement Disorder Society on tremor. Mov Disord. 1998;13 Suppl 3:2–23.PubMedGoogle Scholar
  2. 2.
    Deuschl G, Heinen F, Kleedorfer B, et al. Clinical and polymyographic investigation of spasmodic torticollis. J Neurol. 1992;239:9–15.PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Roongroj Bhidayasiri
    • 1
    • 2
  • Daniel Tarsy
    • 3
  1. 1.Chulalongkorn Center of Excellence on Parkinson’s Disease and Related DisordersChulalongkorn University HospitalBangkokThailand
  2. 2.Department of NeurologyDavid Geffen School of Medicine at UCLALos AngelesUSA
  3. 3.Department of NeurologyHarvard Medical School Beth Israel Deaconess Medical CenterBostonUSA

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