Did they tell you what piece was missing to be considered either ADD, ADHD or ASD? Both paeds we have seen tend to consider all of those disorders either symptoms of or commonly co-morbid with some sort of umbrella condition like ASD, ADD or ADHD, particularly once you start seeing a whole cluster of them not just one. My question is not doubting you, but curiosity as to the different ways different professionals think about these things (my own DD has CAPD, dyslexia, SPD and gross motor issues, all picked up before the Aspergers diagnosis).