Host: Many parents may mistake ADHD for Tourette’s Syndrome, especially since the two disorders have some similar movements, can you tell us the difference between Tourette’s Syndrome and ADHD? Ren Yanling: First of all, ADHD and Tourette’s Syndrome are two different diseases, and their manifestations are not the same, but because almost 30% to 50% of children with Tourette’s Syndrome will have ADHD combined, some parents will be confused when the doctor tells them that their child has ADHD after the diagnosis of Tourette’s Syndrome. Is the child with Tourette’s syndrome or ADHD? In general, tic disorder is characterized by frequent eye squeezing and other uncontrollable movements and vocalizations. ADHD, on the other hand, is mainly characterized by inattentiveness, short attention span, easy distraction, making small movements in class, inability to keep quiet, and starting to answer before the teacher finishes asking questions, which is a kind of impulsive behavior. In addition, tic disorder combined with ADHD can be complicated to treat, so we need to be clear about which problem to address first. If the tics are mild, psychological treatment and treatment of hyperactivity will be used first; if the tics are severe, treatment of tics will be the main focus.