I just delt with it in my pair. It is related to husbandry, but I'm in the dark as to why it happened with mine. However, I cleaned all the infection off, exposing the skin layer below the infection. I then threw them outside in the Iguana pen and they've done extremely well, healing up within three weeks of when I noticed the infection. Finding out why thier immune systems are suppressed is a start and something that can't be diagnosed on the Internet. I can tell you that physical and mental stress is usually associated with bacterial and fungal blooms. It usually takes a while, but being stressed out all the time does take it's toll eventually