the opening post made me cringe ! that finger looks bad.
Honestly I think that when you hit your head and you get a bump is insignificant because there is not much you can do to help it
WHEN YOU RIP THE SKIN OF YOUR FINGER, PULL TOWARDS THE NAIL DON'T PULL DOWN, IF YOU PULL DOWN IT WILL JUST KEEP TEARING BUT IF YOU PULL UP IT WILL JUST FALL OFF