His belly does appear to be slightly pink but aside from that there are no obvious signs he's going into shed. I feel like I should clarify that the female ball python I have been keeping with him has no signs of anything wrong with her belly before I mention this, but I did add some water to the substrate before I put it into their tank the last time I cleaned it to hopefully raise humidity so maybe it is scale rotThe damage does seem significant and I have no idea how I didn't realize it until now nor do I know how long it's been like that. Do you believe a vet visit will be necessary? Is there a fix for scale rot?