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Uploaded on Oct 25, 2008
Song: Enya - The Celts
Tourette Syndrome (TS) is a neurological movement disorder that is inherited. It affects between 100,000 to 200,000 people in the United States. About 1 million Americans may have very mild symptoms of TS. A person with TS makes involuntary and repeated body movements, called "tics." The tics are not always present, but may worsen with fatigue or stress.
The basic cause of TS is not known, but it is probably caused in part by an abnormal gene that alters how the brain uses neurotransmitters such as dopamine, serotonin, and norepinephrine. A neurotransmitter is a chemical that transmits or carries a signal from one nerve cell to another.