It is most definetly not the beginning of a shed cycle as it is so isolated in the area around the vent and not all along the belly. I've checked my UTH and it is not over heating and seems to be funtioning as normal. Upon doing a quick google search I found the most likely thing for it to be is the early stages of scale rot which disappoints me to say the least that my husbandry has been that sub standard. I've moved her onto paper towels for now after thuroughly cleaning and disinfecting her cage. If I am able to get a more definitive diagonsis from a vet, is this minor case of scale rot treatable at home? I see many different things across the internet of using an antibacterial ointment such as polysporin for such issues, would this be okay? The affected area is only about 3/4cm - 1cm squared(less than half an inch)