The severity of tic disorders is a common concern for parents. 1. One or more motor and/or vocal tics that are sudden, rapid, repetitive, non-rhythmic, and stereotyped. 2. Multiple episodes per day for at least 4 weeks, but not more than 12 months. 3. The above symptoms cause significant restlessness, social and employment activities. 4.Onset before the age of 18 years. 5.The above symptoms are not caused by certain drugs (such as stimulants) or medical diseases (such as Huntington’s chorea or post-viral encephalitis). 6.Does not meet the diagnostic index of chronic motor or vocal tic disorder or Tourette’s syndrome. Chronic motor or vocal tic disorder 1. One or more motor or vocal tics, manifested as sudden, rapid, repetitive, non-rhythmic and stereotyped movements or vocalizations that do not occur simultaneously during the course of the disease. 2. Multiple episodes per day, either daily or intermittently, with a duration of more than 1 year, during which the tic-free interval lasts for no more than 3 months. 3. The above symptoms cause significant restlessness and affect social employment and other important areas of activity. 4.The onset is before the age of 18 years. 5. The above symptoms are not directly caused by certain drugs (e.g. stimulants) or medical conditions (e.g. Huntington’s chorea or post-viral encephalitis). 6. The above mentioned twitches or vocalizations are present, but are not consistent with Tourette syndrome. C. Tourette syndrome 1, with multiple motor twitches and one or more vocal twitches, sometimes not necessarily at the same time. The twitches are sudden, rapid, repetitive, non-rhythmic, and stereotyped movements or vocalizations. 2. The twitching occurs several times a day, usually in bursts, and the condition has been persistent or intermittent for more than one year, with intervals without twitching not exceeding three months in a row. 3, The above symptoms cause significant restlessness, social, employment and other areas of activity. 4.The onset is before the age of 18. 5.The above symptoms are not directly caused by certain drugs (such as stimulants) or medical diseases (such as Huntington’s chorea or post-viral encephalitis). This category includes tic disorders that do not meet the above diagnostic criteria, such as onset lasting less than 4 weeks or onset after the age of 18 years. The severity of tic disorders is generally considered to be milder for transient tic disorder, more severe for chronic tic disorder, TS or fully developed TS, and more complex for TS with additional disorders, which require targeted treatment from different aspects and can still be expected to improve. The ultimate severity and regression of the disorder should be assessed after the onset of adolescence. Currently, the Yale Tic Disorder Overall Severity Scale is generally used for clinical assessment.