Final answer:
Persistent motor or vocal tic disorder is characterized by either motor or vocal tics, whereas Tourette's disorder involves a combination of both motor and vocal tics.
Step-by-step explanation:
Persistent (chronic) motor or vocal tic disorder differs from Tourette's disorder by requiring either motor or vocal tics but not both simultaneously. In contrast, Tourette's disorder involves a combination of both motor and vocal tics. Understanding this difference is key in the diagnosis and management of these conditions.
Relaxation and exercise may help alleviate the symptoms for both disorders. Although both conditions involve repetitive motor behaviors, it is this combination or lack thereof that primarily distinguishes them.