Googled: "hospital stay burns" "burn treatment" "length of hospital stay after coma" also checked out a couple hospital websites.
Situation: I have an otherwise healthy, 17 year old boy who got caught in an explosion of his high school chem lab. He was the only one there, so no one else was hurt, or knows exactly what happened. Some of the roof collapsed on him, and he was hospitalized almost immediately. He had some internal damage and a lot of pretty bad burns, and was unconscious/ in a coma for a couple of weeks. The fantasy twist kicks in, he's fine, heals up alright between some good hospital care and phoenix magic, and wakes up/ considers himself perfectly fine after approx 3 weeks. The only catch- he still has an abnormally high body temperature- 108degreesF. I know this is more than fatal, but it's the aftermath of the magic that saved him. The hospital staff has no knowledge of the magic, and considers him lucky to have survived.
Question: How long would he have to stay after he wakes up? I'm guessing at least a couple of weeks while they do tests to make sure his temperature is the only abnormal thing. And what would his stay/ daily routine in the hospital be like? Would he be allowed to get up and wander around? Would he be allowed visitors? Everything I've googled about the burn treatment just gets me hospital pages recommending their burn centers, without saying what the actual treatment/ procedure is.
Also, less importantly, how realistic is it to have part of the ceiling collapse in the first place, and what would you recommend he have used to do so? The chemistry teacher trusts him, so he has access to a lot of chemicals+bunser burner+matches, so the result could be pretty spectacular, but should only harm the immediate area. (ie, that hallway would need repairing, but the students could continue to attend school, just without any hands-on chemistry.) I was thinking probably just a large amount of methane from the bunser burner released into the air, and then he lights a match.