Tourette's syndrome is a brain condition that causes involuntary vocal and motor tics. Vocal tics include sounds like throat clearing or animal noises, while motor tics involve movements of the eyes, tongue, head or other body parts. It is thought to have a genetic cause and may be linked to issues during pregnancy like lack of oxygen or stress. Doctors diagnose Tourette's based on symptoms and medical history, and treatment focuses on managing tics through medication or other methods.