My son is 6 he is diagnosed by his doctor after all tests done to be adhd but along his hyperactivity he eats paper tissues ,soap, body creams, crayons and he cant help from spilling liquids from bottles , he also rubs on hus hands and roll his eyes and bend his head when he is excited about something in a way that doesnt seem quite normal! Should i investigate more about the matter ! Or is it ocd manifested under pressure of schooling !