The answer is that the International Olympic Committee (IOC) has recognised the World Bridge Federation as a sport organisation, and as such, bridge is subject to the same regulatory environment as any other Olympic sport.
Tourette Syndrome is one type of Tic Disorder. Tics are involuntary, repetitive movements and vocalizations. They are the defining feature of a group of childhood-onset, neurodevelopmental conditions known collectively as Tic Disorders and individually as Tourette Syndrome, Chronic Tic Disorder (Motor or Vocal Type), and Provisional Tic Disorder.
Tourette Syndrome (TS), first described by Gilles de la Tourette, can be the most debilitating of the tic disorders and is characterized by multiform, frequently changing motor and vocal or phonic tics. There are multiple diagnostic criteria, as defined in the Diagnostic and Statistical Manual of Mental Disorders IV.