The Causes, Symptoms and More About Tourette Syndrome

Risk Factors. A person with family members with TS is at higher risk for developing the condition. A parent with the gene has a 50 percent chance of passing it to the child. TS appears in all racial and ethnic groups. It is three or four times more prevalent in males than in females. There are studies showing that smoking during pregnancy, low birth weight, pregnancy complications, and childhood infections may be factors, but more research is needed.