has he seen the pedi regularly for checkups up until now? He would be showing signs of autism before now unless he might have Aspbergers which is high functioning and sometimes not diagnosed until later. Has your DR said anything? Is he in Kindergarten yet?
If you had a steady pediatrician they should have seen it early. Most signs are delays in speaking, social interaction, a common thing is they don't retain eye contact. What is your son doing that makes you think he is autistic? I have a four year old and he was diagnosed when he was 2.
HI and welcome to the group.
don't know for sure, you could check out some groups here relating to Autistic children but clicking on the tab at the top of the page Groups and Conversations or typing in the word Autistic children in the square on the right side (top) located by Add A New Post.
I recommend checking out these websites for more information on Autism: http://www.autism-society.org/ and http://www.autismspeaks.org/.
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