What's happening?
It's choking.
What's happened?
He's sprained or thrown out his back.
You ... after you fainted. (if everything's ok)
come round
What has he got?
Sore throat
He feels...
dizzy
What's happened?
She's fainted / passed out.
What's this?
Band aid or plaster
He's...
unconscious
What has she got?
rash
What are stitches?
...
What's she doing?
coughing
She's ...
swollen
Why is she taking her shoe off?
She's got a blister.
What has he got?
sunburn
What's happened?
He's got food poisoning.
What's he doing?
sneezing
His nose is ...
bleeding
He feels like...
vomiting / throwing up (OR He's going to get sick)