Yesterday my ex was burned on the face by a radiator exploding while he had his

Yesterday my ex was burned on the face by a radiator exploding while he had his head in the engine bay while the car was running so boiling water (he is a mechanic it happened at work) he was sent to hospital and they treated him from what I can gather with morphine and some sort of cream that seems to form a second skin - today he seemed fine and took my daughter for a day at his house - within 2 hours I got a call asking me to come get her as he was sick - I got there and he was pretty much just lying on the floor - he didnt talk to me he just looked at me and told me where my daughters bag was and that was it - should I be worried or is it normal to feel this rotten - Im guessing there might be some shock or something involved but Ive done a search and cant find any info on this so thought Id ask - should he go back to hospital or is this normal? He was told he didnt quite have 3rd degree burns so I guess its 2nd degree burns.