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Chronic motor tic disorder - Overview

Alternative Names

Chronic vocal tic disorder; Tic - chronic motor tic disorder

Definition of Chronic motor tic disorder:

Chronic motor tic disorder involves quick, uncontrollable movements or vocal outbursts (but not both).

Causes, incidence, and risk factors:

About 1 to 2% of the population has chronic motor tic disorder. The condition is more common than Tourette syndrome. However, it is not as common as transient tic disorder.

All types of chronic tics are believed to be forms of Tourette syndrome.

  • Reviewed last on: 2/13/2008
  • Luc Jasmin, MD, PhD, Departments of Anatomy & Neurological Surgery, University of California, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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