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The definition of Tourette Syndrome, shown below, requires that sounds be present.


Sounds are more often described as Phonic Tics.  Some definitions of a tic refer to vocal tics, however, more recent definitions refer to them as phonic tics.  A vocal tic requires the use of the vocal chords in tics such as throat clearing or gurgling.  A phonic tic includes sounds such as sniffing and whistling.  Both are considered sounds for the purpose of diagnosing TS.


See TICS for a more complete description of phonic tics and see the TIC LIST for more examples of phonic tics.



Tourette Syndrome is a chronic

neurochemical disorder that causes involuntary movements and sounds known as tics.


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