Your question is a very good one, but it is difficult to be sure about the answer. Your son is at the age when children often go through a stage of feeling insecure, often have temper tantrums and also are more likely to have problems with separation anxiety when their parents are not with them at all times. This stage and age is often called the 'terrible two's' However, you give an excellent description of his picky eating that I suspect may include a dislike of certain food textures, his more than usual shyness and his fixation on certain toys which taken together with his constant crying and his other behaviour features may indeed be due to him being in the autism spectrum classification. He can be assessed this age with the question being should he be seen by a paediatric neurologist or by an experienced child psychologist? It would probably be best for your son to be seen by a paediatric neurologist first.
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