Having a child with autism certainly makes it more difficult to tell if something is wrong. But you have to check like you are checking an infant who can't tell you if anything is wrong.
Signs to look for:
1. Changes in behavior - more crying, more anger, irritability
2. Difficulty walking normally
3. persistent vomiting
- more than 2 episodes
4. Sleeping more than usual - not wanting to wake up - this does not pertain to bedtime.
5. Doesnt recognize you -
If you are worried, you can always have him checked out to be on the safe side - but I would just observe for symptoms
It doesn't sound like there is an open wound or laceration that requires sutures from your description.
I would wake him up once tonight and make sure that he is ok -
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