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EntityQ738538· pop 43· linked from 272 articles

Also known as tics

A tic is a sudden and repetitive motor movement or vocalization that is not rhythmic and involves discrete muscle groups. Tics are typically brief and may resemble a normal behavioral characteristic or gesture.

Key facts

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Tic
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Tourette's tic long medium 192kbps.OGG
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Examples of motor tics
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Psychiatry, neurology

via Wikipedia infobox

Research

11,966 papers

via PubMed

~9 min read

Encyclopedic overview

10 sections
Contents
  • Classification
  • Motor or phonic
  • Simple or complex
  • Characteristics
  • Diagnosis
  • Differential diagnosis
  • See also
  • Notes
  • Further reading
  • External links

A tic is a sudden and repetitive motor movement or vocalization that is not rhythmic and involves discrete muscle groups. Tics are typically brief and may resemble a normal behavioral characteristic or gesture.

Tics can be invisible to the observer, such as abdominal tensing or toe crunching. Common motor and phonic tics are, respectively, eye blinking and throat clearing.

Excerpted from Wikipedia’s “tic” article, available under the CC BY-SA 4.0 licence.