The course and prognosis of Tourette syndrome.

The view of Tourette syndrome as a lifelong disorder, once held as a certainty, has changed considerably in the past two decades. It is now known that in the majority of cases, tics will ebb in severity and will no longer be problematic in the adult years. This discovery, however, has been accompanied by the realization that Tourette syndrome is a far more complex disorder than was originally discerned and that it has many unanswered questions.