What is autism disorder in children or the spectrum?

PDD spectrum : Autism spectrum still fascinates us as neuroscientist and we just met as a group at onemindforresearch at tom hanks who still loves his role as forrest Dopamine serotonin and norepinephrine all along with GABA are not regulated and they perceive world as overstimulated place so they shut down and their senses are overloaded and have their own ways of stimulation which may seem odd or painful.

DSM-V changes: In dsm-iv, the current classification system, autism refers to a severe disorder usually evident in early childhood, whereas autism spectrum disorder involves an evolution of a range fo disorders autism, aspergers, and pdd as well as a less frequent disorder into a concepr of varying severrity of autism spectrum disorder in dsm-v. See http://cpancf.Com/autismspectrumdisorder.Asp i.