Tourette Syndrome (TS) can be a difficult condition to diagnosis precisely because of the various associated conditions. A diagnosis is made by observing symptoms and by evaluating the history of their onset. No blood analysis, x-ray other type of medical test exists to identify TS. However, a doctor may wish to order an EEG, CAT scan or certain blood tests to rule out other ailments that could rarely be confused with TS.

Remission can occur at any time. Present data suggests that the tic symptoms tend to stabilize and become less severe in adult life. Those diagnosed with TS can anticipate a normal life span.