tourette's%20syndrome%20-and-%20other%20tic%20disorders
TOURETTE'S SYNDROME & OTHER TIC DISORDERS
Tics are sudden, rapid, non-rhytmic, repetitive, motor movements or vocalizations. The mean age of onset is approximately 5 years old.
Tourette's syndrome is the most common form of tic disorder.
There is a strong genetic component showing a 10- to 100-fold increase in the rates of tics and Tourette's syndrome among first-degree relatives of Tourette's syndrome patients.
Simple motor tics are restricted to a single or a few muscle groups and last less than a fraction of a second.
Complex motor tics involve larger muscle groups, usually last longer and appear purposeful and goal-directed.

Tourette's Syndrome & Other Tic Disorders References

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  19. American Psychiatric Association. Tic disorders. In: Diagnostic and statistical manual of mental disorders. 5th ed. Arlington, VA: American Psychiatric Publishing; 2013:81.
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  23. Pringsheim T, Okun MS, Müller-Vahl K, et al. Practice guideline recommendations summary: treatment of tics in people with Tourette syndrome and chronic tic disorders. Neurology. 2019 May;92(19):896-906. doi: 10.1212/WNL.0000000000007466. PMID: 31061208
  24. Pringsheim T. Canadian guidelines for the evidence-based treatment of Tourette syndrome. http://www.bcmhsus.ca.
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