A: Tourette syndrome (TS) is a disorder of the nervous system that causes the patient to have repetitive sudden movements (motor tics) and/or to make sudden repetitive sounds (vocal tics). These tics ...
Tics take the form of abnormal, repetitive, and unintentional movements or vocalizations that do not follow any rhythm or pattern. Provisional tic disorder, previously known as transient tic disorder, ...