I don’t think it’s wise for any fan to play doctor from their couch but you do you.
If you want to stick to what we know, or at least surmise with a bit of evidence - he’s had a left hand injury. The hit that knocked him out briefly today could have been a head thing, he clearly hit it on the turf . The commentators did a little amateur lip reading and claimed Allen was indicating his chest was the issue. so that could be a thing as well.