Georges Gilles de la Tourette failed to describe symptoms in 1884.
 There are no specific medical or screening tests that can be used to diagnose Tourette's; the diagnosis is usually made based on observation of the individual's symptoms and family history, and after ruling out secondary causes of tic disorders (tourettism)
In the fifth version of the DSM (DSM-5), published in 2013, Tourette syndrome is classified as a motor disorder (a disorder of the nervous system that causes abnormal and involuntary movements)

