Does he takes meds for his condition, sometimes they have side effects that require adjusting, changing, are there any jealousy issues, has he had a new sibling , check out the dynamics of his life, does he get enough attention from you all, sometimes children do negative things if they are needing more attention, does his Dad play games and sports with him, it has been found that children with these disorders fair better when they have a good amount of Physical activities ..get Dad more involved .