My 9 year old son hs developed a tic, I believe, from taking ritalin for atention deficit disorder. He did well all year in school, and I stopped giving him ritalin one month ago when school ended. It seems he has developed this tic of rolling his eyes after stopping the medicine. Does anyone have any advice? We have tried many different medicines- concerta, metadate, all wioth severe side effects with my son, so do not want to keep trying defferent medicines. It is just confusing since he is not on any medicine now. . Thanks.