The essential feature of transient tic disorder is the presence of single or multiple motor tics and/or vocal tics. The tics occur many times a day.
A tic is a sudden, rapid, recurrent, nonrhythmic, stereotyped motor movement or vocalization. The vocal tics include various words or sounds such as clicks, grunts, yelps, barks, sniffs, snorts, and coughs.
Single or multiple motor and/or vocal tics (i.e., sudden, rapid, recurrent, nonrhythmic, stereotyped motor movements, or vocalizations)
The tics occur many times a day, nearly every day for at least 4 weeks, but for no longer than 12 consecutive months.
The disturbance causes marked distress or significant impairment in social, occupational, or other important areas of functioning.
The onset is before age 18 years.
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).
Criteria have never been met for Tourette’s disorder or chronic motor or vocal tic disorder.