Hi Iguana, I'm inclined to agree with the others that are of the opinion it is skin damage and I don't believe it is a result of shedding problems. I'm of the opinion that like others have suggested it's either the result of a slight burn or an abrasion but more likely a burn. As nice as the cage furnishings appear I think your setup v the size of the snake is what is actually causing the problem. I'd consider housing it in a larger enclosure, getting rid of the infrared light and providing a larger water bowl for it to soak and another smaller one for drinking water. You should never have to mist a cage for diamonds, soak them or apply moisturizers etc pre shed if the snake is provided with the right environment. The snake looks fine but again, as suggested, stop soaking it so the wounds won't become infected and just let them repair themselves over time (often after one or two sheds). Above all I'd consider a different method of housing. Cheers.