I received the following photo and description from a boy I know that has a BP. Can you offer some advice? I know the first choice is a vet visit but I'm looking for any other info you can provide. Thanks.

"I am having a problem with my ball python. I know the picture isn't the best, but I will try to describe. About 1/3 down on the snake the ventral (bottom) scales swelled, about another inch down the scales deflate beyond the normal. The scales are an off pink, Im sure it is not an old shed. When I went to pick him up before I realized the problem there was a type of clear puss on my hand. If you know anything about this or could help I would greatly appreciate it."