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's syndrome is a mental disorder in which people develop tics. Tics are stereotypical movements or vocalizations that people have a sudden urge to carry out. One example of a tic is rapid eye blinking that occurs without the person being actually trying to blink their eyes.