thanks for all your replies! i feed F/T so injuries were never a worry. i thought about a humidity issue but i'm always running above 65 F. during his shed he was always above* 70 F so idk if that makes a difference.
i DID look in his hides and i see a few pointy spots i'm not too fond of. he's getting snug in his hides now so i might need to start sanding them down.
now that i look at these pictures, the longer mark on him matches a long bump in his hide where his head usually is. looks like i'll have to do some work on these hides.
again, thanks everyone!