i was going to say that if your husbandry was spot on and he wasn't losing any weight to not worry about it too much.. then i clicked on the picture. lol doesn't look quite right. i'd be on the safe side and go get a fecal done at the vet. fecals shouldn't cost that much, but as for the medicine usually used to treat parasites in snakes (if that's what it is), i have no idea.