Abstract

The last two decades have seen a dramatic increase in scientific publications on Tourette syndrome, but the etiology of this common neurodevelopmental condition is still unknown. Many questions remain—about the unitary nature of the syndrome, and the criteria used to define it in such internationally accepted manuals as the Diagnostic and Statistical Manual of Mental Disorders and the International Classification of Disorders. Meanwhile, individuals and families affected by TS remain underserviced, as pharmacological and behavioral therapies provide relief for some but not all who need support. We urgently need new...