BAsic information description Autism is a disorder that involves the way a child develops. It is usually discovered by the time a child is aged 2 and a half years, but could be later. Parents may notice that an infant or child is not behaving, talking, playing, or learning new skills as expected for their age group. Asperger's syndrome is like autism, but without the disabilities. frequent signs and symptoms Does not talk or may talk using nonsense words. May use a sing-song voice and...