I was wondering that too, especially since a mite was found. Also thinking that maybe the live rats this snake was fed previously might have had fleas etc. I've had albino snakes before, but never any with mites to know how the bites might show up- so thanks for the input. I've only ever had 2 snakes with mites, one black & one brown, many years ago.
Mites or fleas would make sense. I've seen posts like this before and if I recall correctly the consensus was that they were mites. I'll see if I can find that thread again.