_:vb50951165 "url:https://www.cdc.gov/ncbddd/tourette/diagnosis.html"^^ . _:vb50951165 "url:http://www.tsa-usa.org/Medical/definitions.html"^^ . _:vb50951165 . _:vb50951165 . _:vb50951165 "A specific developmental disorder that is characterized by the persistent presence of involuntary brief movements or sounds occuring intermittently and unpredictably out of a background of normal motor activity."^^ . _:vb50951165 . _:vb50951165 .