Just came across this.
Pervasive Developmental Disorder - Not Otherwise Specified, or PDD-NOS, for short, is a condition on the spectrum that has those with it exhibiting some, but not all, of the symptoms associated with classic autism. That can include difficulty socializing with others, repetitive behaviors, and heightened sensitivities to certain stimuli.Those with PDD-NOS behave like those with classic autism in many ways.
How would we know the difference between what our daughter's displaying and this? She has special needs anyways and say they can't check her yet for autism. I'm getting more confused with everything. She displays all autistic signs and some professionals think she might be yet others don't including her special needs nursery teacher. If you read the thread on her about DiGeorge you'll see why I think she is autistic.