What are the Tourette syndrome (TS) Study Group diagnostic criteria for nonspecific tic disorder (E-1 and E-2)?

Updated: May 30, 2019
  • Author: William C Robertson, Jr, MD; Chief Editor: Stephen L Nelson, Jr, MD, PhD, FAACPDM, FAAN, FAAP  more...
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Diagnostic criteria for nonspecific tic disorder (E-1 and E-2) are as follows:

  • Tics that do not meet the criteria for a specific tic disorder fall into this category; an example would be a tic disorder with tics lasting less than 1 year and without any change over that period of time

  • Motor and/or vocal tics must be witnessed by a reliable examiner directly at some point in the illness or by videotape or cinematography (for definite nonspecific tic disorder, E-1) or (for tics not witnessed by a reliable examiner) tics must be witnessed by a reliable family member or close friend, and description of tics as demonstrated must be accepted by a reliable examiner (for nonspecific tic disorder by history, E-2)

Diagnostic criteria for definite tic disorder, diagnosis deferred F: This disorder meets all criteria for definite TS (first definition, A1), but duration of illness has not yet extended to 1 year.

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