Vocal tics include grunting, repetitive clearing of the throat, and even barking.

声音抽动包括咕哝声、反复清喉咙，甚至吠叫。

For a diagnosis of persistent motor or vocal tic disorder, also called chronic tic disorder, an individual must have either a single or multiple motor tics or vocal tics —but not both.

而要确诊慢性抽动障碍，即持续性动作或发声抽动，患者只需满足存在动作或发声性抽动的其中之一，不必两个兼具。

For a diagnosis of tourette's disorder, an individual must have multiple motor tics, and at least one vocal tic, however, these do not have to happen at the same time.

确诊Tourette综合征必须满足出现多种动作抽动以及至少一种发声抽动，不过这些抽动无须同时出现。

Criteria A is the number of motor or vocal tics, criteria B is the duration of the tic disorder, and criteria C is the age of the person when he or she started having tics.

标准A是抽动种类的数量，标准B是抽动障碍的病程长短，标准C是患者的发病时间。