Hello,
That is hard to tell from the picture, but not sure if it is raw or not. Are his eyes bulging?
Could he possibly be getting ready to shed, or do you know if he is rubbing his nose on
the glass tank?
In the case that it is a raw area, you could proactively start using some raw, unpasteurized
honey on those areas to help out if there is some infection.
Is he eating right now?
Tracie