A: Tics and other repetitive behaviors are more common than parents realize. As many as 20 to 30 percent of children exhibit short-term tic-like behavior at some point in childhood. Usually, these behaviors fade on their own -- as long as parents and others don't make a big deal out of them.
But there is another group of children who seem to develop tics immediately after exposure to a type of strep infection. This is a complex determination that must be done by an expert. Of course I can't evaluate or treat your son here, so it's important you bring this to his pediatrician's attention right away. Good luck!