Final answer:
Tourette's syndrome is a genetic disorder characterized by involuntary vocal sounds and movements, while chronic tic disorder involves persistent motor or vocal tics for at least one year. The main difference lies in the presence of both motor and vocal tics in Tourette's syndrome and the potential onset age.
Step-by-step explanation:
Tourette's syndrome is a genetic disorder characterized by involuntary vocal sounds and movements. It is related to neurological problems and can be managed through relaxation and exercise.
Chronic tic disorder, on the other hand, is a condition where an individual experiences persistent motor or vocal tics for at least one year, without the presence of Tourette's syndrome. The symptoms can fluctuate in severity over time.
The key difference between the two is that Tourette's syndrome involves both motor and vocal tics, while chronic tic disorder can involve either motor or vocal tics. Furthermore, Tourette's syndrome usually starts before the age of 18, whereas chronic tic disorder can develop at any age.