Tourette Syndrome (TS) is a neurological disorder characterized by tics - involuntary, rapid, sudden movements or vocalizations that occur repeatedly in the same way. Diagnostic criteria include:
Although the word 'involuntary' is used to describe the nature of the tics, this is not entirely accurate. It would not be true to say that people with TS have absolutely no control over their tics, as though it was some type of spasm; rather, a more appropriate term would be 'compelling'.
People with TS feel an irresistible urge to perform their tics, much like the need to scratch a mosquito bite. Some people with TS are able to hold back their tics for up to hours at a time, but this only leads to a stronger outburst of tics once they are finally allowed to be expressed.
