There is a black spot at the base of my Mellers tail. It's been there a while and hasn't really gotten much bigger over the last 2 weeks or so. Thought it was shed that got stuck and we removed the shed, but it hasn't gotten much better. I cleaned it with alcohol free Listerine and applied some silvadene yesterday (white stuff in pics). I felt the area. Not texture difference in skin on affected area vs non affected areas. Not tissue density difference either. When i cleaned it nothing really "came off" and Ripley didn't really react. He's eating fine. No other health issues. Had a check up about 4 months ago and clean bill of health. We adjusted his enclosure in case it was a humidity/environmental issue. Any ideas? Our local Herp vet is only in the office 2 days a week and the nearest one after that is an hour and i don't want to stress him out like that unless we absolutely HAVE to...