Tourette syndrome is a neurological disorder characterized by repetitive, involuntary movements and vocalizations called tics. It is caused by changes in brain chemicals like dopamine. While genes may play a role, the condition is not fully hereditary. Tourette's commonly begins in childhood and improves in late teens/early adulthood, though it is generally lifelong. Treatment focuses on managing severe symptoms through medications that block dopamine receptors or other drugs, as most cases do not require medication.