This study evaluated the prevalence of tic disorders. MEDLINE and EMBASE databases
were searched, using terms specific to Tourette syndrome and tic disorders, for studies of …

The aim of this study was to ascertain accurately the prevalence of Tourette syndrome (TS)
in a mainstream school population. All year 9 pupils (aged 13 to 14 years) in a mainstream …

Tourette syndrome (TS) is characterized by the presence of motor and vocal tics and is often
accompanied by comorbid symptoms. We assessed the frequency of the comorbid …

Background Prevalence is a simple statement about the frequency of a disease in the
population. For many medical conditions, including Tourette syndrome, there are true cases …

Objective: Tourette syndrome (TS) is a chronic childhood neurodevelopmental disorder
characterized by motor and vocal tics and frequent comorbidities. The clinical presentation …

We examined the rates of comorbid pervasive developmental disorders in participants with
Tourette syndrome. We used 7288 participants from the Tourette Syndrome International …

Aim: To describe the symptoms, onset, heredity, pre‐/perinatal events and socio‐economic
status in Tourette syndrome (TS) and other tic disorders. Methods: From a total population of …

We have established a multisite, international database of 3500 individuals diagnosed with
Tourette syndrome (TS). The male: female ratio is 4.3: 1 for the total sample, with wide …

Background Tourette syndrome (TS) is estimated to have a prevalence of 0.30–0.77% in
school aged children. Longitudinal studies suggest that roughly half-to-two-thirds of children …

OBJECTIVE: Recent epidemiologic studies have demonstrated that Tourette syndrome (TS)
and chronic tic disorder (CT) are more common than previously recognized. However, few …