Levels Of Autism Can My Son Develop Autism After 2 Years Of Age?

Can my son develop autism after 2 years of age? - levels of autism

My nephew was diagnosed for many years. Finally, at the age of 10 he discovered the high level of autism. He believed that language problems and at the school for years. My son, now 18 months old, has no symptoms, which I just read online. My question is, could develop autism, say, after 2 years. So far, everything I read the signs and symptoms until the age of 2.

"No big smiles or other warm, expression of joy or six months after

"No sharing travel sounds, smiles or facial expressions or nine months after

"No nonsense at 12 months

"No-to-side movements such as pointing, showing, reaching or waving by 12 months

"Not a word of 16 months

N-two-word meaningful phrases (without imitating them or repeating) by 24 months

"Any loss of speech or babbling or social skills at any age

So far, what you can do all these things. What is fever?