I'd never heard of it, so I did a Google search . . . Yikes!
In its most severe forms, patients may have uncountable motor and vocal tics during all their waking hours with outburst of full body movements, shouting or self-mutilation. At times the tics seem organized in orchestrated patterns that are characteristic of that individual. Despite this, many patients with severe tics manage to achieve adequate social adjustment in adult life, although usually with considerable emotional pain. More than the severity of motor and vocal tics, the factors that appear to be of importance with regard to social adaptation include the seriousness of attention problems, obsessive-compulsive symptoms, the degree of family acceptance and support, intelligence and ego strength.
Going by that, I hope I never get it!
Rick / OCRR