Typically, children are diagnosed with Autism between the ages of 2-4 years; however the symptoms of Autism can be detected as early as 6 months of age.
Early possible symptoms
Early possible symptoms could include: not making eye contact with parents, not cooing or babbling, not responding when you play the peek-a-boo game with them and not smiling when parents smile at them. These, of course, are the very early symptoms of Autism. It is important to note that there could be other reasons for a developmental delay or they could be just a little behind at this stage but will catch up over time.
Other symptoms as getting older
As the child becomes older, there are other areas that you should be aware of: if they have not made any attempt to speak after 15 months and they are not pointing, waving or grasping in addition if they do not respond when their name is called.
They seem to be indifferent to others, in other words, they don