Dont know if this helps but i felt there was something different with my son from early on but put it down to my postnatal depression, when i stated this to my doc he was by then around 2 years old, he was very demanding,hyper and always seemed to be upset. He then was put in touch with several professionals ie speech therapy, behavioural therapist, occupational therapist and after 2.5 years as a last resort he was sent to an autism clinic which the proffesionals wanted to rule autism out but told me they didnt feel he was autistic. 4 weeks later at the clinic i was given the diagnosis of HFA, which was a major shock as i couldnt see it but lately with a bit of learning on the subject i am seeing the signs more and more. I feel if you have worries get your little one checked. I was totally convinced my child was not autistic and ended up wrong. If you can give me some advice on diet or supplements i would really appreciate it as you obviously know alot more about this than i do.