This document discusses descriptive epidemiology of Tourette syndrome. It begins by providing background information on Tourette syndrome, describing it as a nervous system disorder characterized by uncontrollable tics. It then analyzes data from the 2011-2012 National Survey of Children's Health, finding that an estimated 1 in 162 children have Tourette syndrome. Rates are higher in boys than girls. It concludes by noting limitations in the data and opportunities for future research.