CBS News follows teen as he undergoes a brain procedure to treat his Tourette syndrome
CBS News lead national correspondent David Begnaud, who has been open about living with Tourette syndrome, meets Callum DeQuevedo, a 17-year-old living with an extreme case of Tourette's. CBS News cameras were the first to ever film a Tourette's patient undergoing a type of brain surgery aimed at relieving DeQuevedo's tics and improving his quality of life.