Really worried about my snake, please help?

[marenkae]

Hmm interesting. I've never sen this before. I would really stress on getting this checked out. As NH93 said, do some googling. I'm think vet though

Yep I'm taking him to the vet tomorrow. And even though I took the bark out of his cage, he still periodically will rub that spot against the walls and floor of the tank. I'm hoping they won't hurt him any more because all the surfaces are smooth. I just don't know what else to do for him and I'm really anxious about this. Thanks everyone for trying to help out.