The exact cause of Tourette syndrome is unknown, but it is believed to be a complex disorder likely caused by a combination of inherited (genetic) and environmental factors. Some theories suggest that bacterial infections, abnormalities in the metabolism of brain chemicals, and problems during pregnancy or childbirth may also play a role. It is an autosomal dominant disorder, which means that both boys and girls can be affected, and only one copy of the gene is needed to have the condition. However, not all children with the gene for Tourette syndrome will develop the condition. Stress and emotional overexcitement can make the condition worse, so learning relaxation techniques can help. It is important to note that not all tics indicate Tourette syndrome, and many children develop tics that go away on their own after a few weeks or months. If you notice your child displaying involuntary movements or sounds, its important to see a doctor to identify the cause and rule out serious health problems.