[Drolefille]

I've had a minor one from a soccer collision.
There's the "keep you awake for 24 hour" bit, which I think my mom did for a bit, but then just checked on me to make sure I was sleeping fine. The checking the eyes is to make sure the pupils are equally dilated because one not working right is a sign of damage. The disorientation fades, it's just the brain trying to sort itself back out again.

The biggest thing I heard was NOT to do anything that would get you re-concussed for however long your brain was recovering from it, a concussion on top of an existing one is a lot more dangerous.

But you don't need to bubble wrap the kid's head or anything, just no wrestling until the doctor says.