This showed up about a day after it's initial vet visit about a month ago. At first it appeared to be a stain from iodine or something similar, it wouldn't wipe away, and it does not appear to affect the snake, so I didn't bother with it.
It is dark blue and is found no other place on the snake, just about mid point on it's back and that's it. The scales in the blue area are dry and scratchy, not smooth like the others.
I does not appear to affect the health of the snake, it eats and poops and wanders and seems perfectly fine.
Anyone have an idea?