My juvenile iguana (almost 2 years old) has been rubbing his nose to the point that it seems like areas of his skin have died. He has a full bathroom to himself with proper UVB/UVA lights and temperature control, as well as plenty of ropes ledges to play and rest on. We did just move, but he's been in the new space for 3 months now, and the nose rubbing has gotten progressively worse. Today when I ran him a bath so he could swim, I noticed that he had a build up of snalt on his nose. As the water washed it off, I could see the skin looked loose. It's white in color, and when gently touched, a large piece hinged off and looks like it's dead to the bone. He did not react to touch to the area. Is this from the rubbing, or is there an infection that causes this? How can I save his nose? I want to protect my little guy. Thanks.