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Causes
By Mayo Clinic staffThe exact cause of Tourette syndrome isn't known, and there's no known way to prevent it. There is likely a combination of genetic and environmental factors. Theories about the causes of Tourette include:
- Genetics. Some studies of twins and families suggest that Tourette may be an inherited disorder. The specific genes involved in Tourette syndrome are still being defined.
- Brain chemical abnormalities. Certain neurotransmitters in the brain may play a role, including dopamine and serotonin.
- Infections. Some research suggests that there's a link between infections and tics, but this remains controversial.
