whats are some symptoms of autism?

the severity of the symptoms vary.
but here are some:
failure to establish friendships with children the same age,
lack of interest in sharing enjoyment, interests, or achievements with other people,
lack of empathy,
problems taking steps to start a conversation,
having a hard time learning the language,
frequent crying,
no real fear of dangers.

i hope those help you!

I think that one of the most frustrating things about autism or Asperger's syndrome is trying to relate to your child. Kids don't come with a manual that tells you what their limitations are; you find that out as you go along. so many times they are reacting to something they perceive as scary, uncomfortable or annoying. they are not able, being young children, to discuss the problem with you; they just react. they may scream, shut down, start spinning. . . you just never know what the problem is until you have figured out the pattern to the child's behavior. And, at times, once they have started into the reaction mode, it's difficult to get them out of it, even if the offensive stimuli is removed. I have found with my grandson, that as he's gotten older he can reason and take on more responsibility for his own behavior. But when he was little it was hard to relate to him.