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DSM-III

In DSM-III, this disorder is called Chronic Motor Tic Disorder

For more information, see Stereotyped Movement Disorders

Diagnostic Criteria

A. Presence of recurrent, involuntary, repetitive, rapid, purposeless movements (tics) involving no more than three muscle groups at any one time.

B. Unvarying intensity of the tics over weeks or months.

C. Ability to suppress the movements voluntarily for minutes to hours.

D. Duration of at least one year.

Differential Diagnosis

In Transient Tic Disorder the tics vary in intensity over time and the duration of the disturbance is always less than one year. In Tourette's Disorder the intensity of the tics varies over time, vocal tics are prominent and the motor movements are weaker and of briefer duration.

DSM-IV

In DSM-IV, this disorder is called Chronic Motor or Vocal Tic Disorder

For more information, see Tic Disorders

Diagnostic Criteria

A. Single or multiple motor or vocal tics (i.e., sudden, rapid, recurrent, nonrhythmic, stereotyped motor movements or vocalizations), but not both, have been present at some time during the illness.

B. The tics occur many times a day nearly every day or intermittently throughout a period of more than 1 year, and during this period there was never a tic-free period of more than 3 consecutive months.

C. The disturbance causes marked distress or significant impairment in social, occupational, or other important areas of functioning.

D. The onset is before age 18 years.

E. The disturbance is not due to the direct physiological effects of a substance (e.g., stimulants) or a general medical condition (e.g., Huntington's disease or postviral encephalitis).

F. Criteria have never been met for Tourette's Disorder.

DSM-5

For more information, see Tic Disorders

Diagnostic Criteria

Note: A tic is a sudden, rapid, recurrent, nonrhythmic motor movement or vocalization.

A. Single or multiple motor or vocal tics have been present during the illness, but not both motor or vocal.

B. The tics may wax and wayne in frequency but have persisted for more than 1 year since first tic onset.

C. Onset is before age 18 years.

D. The disturbance is not attributable to the physiological effects of a substance (e.g., cocaine) or another medical condition (e.g., Huntington's disease, postviral encephalitis).

E. Criteria have never been met for Tourette's disorder.

Specify if:

  • With motor tics only
  • With vocal tics only