Can you post a picture? I'm really unsure what you are talking about, but I assume it's not shedding since you've had 8 other snakes. Is this an open wound, deep enough to require stitches? If so, the best advice anyone can give you is to get to a qualified vet as soon as you can. I know that's not what you want to hear, but you'll need someone to assess the wound and most likely prescribe antibiotics.