I’m new to ADHD and am learning more every day, but my son has Tourette Syndrome (TS). From what I’ve learned with TS, there are many co-existing diagnoses such as ADHD. Is it possible that your child’s ADHD was identified first and now he has a tic disorder or TS? I suggest looking into neurologists who are experienced with TS and tic disorders. It may very well be the start of something else. Hope this helps!