Rough scales coming off like a human scab

[xAnthemia]

Since my check, the entire rough patch of the snake has come off.





All other skin seems... fine? Don't get me wrong, the snake is still underweight, and thus has lose skin. But it isn't lose as in "I could pull and stretch the skin upwards with a tweaser" loose, like seen in another forum post regarding splitting scales/skin.

Also, a further question on slippy skin disease for anyone reading: has any one seen this exact kind of thing before? One day, the scales are normal, next day they're hard and poking up like mountains, ready to peel off like a scab? It seems to happened to suddenly and, given that all the other skin is fine, it seems quite bizare.

Also another question: since they're going to the vets on Monday, should I feed? On the one hand, I don't want him to lose any more weight right after they've just gained some, and they aren't showing any aggravation or 'upsetness' that would indicate pain, but on the other hand the pain might be silent (after all, there is blood; don't know where from since there's no cuts but they might be microscopic), it might cause more damage, and they have a vets appointment coming up.

Thank you to all the help so far, you've all been very good! <3

edit: in terms of strength, they're still strong enough to stick my fingers shut together when snuggling up in my palm, so they haven't physically weakened since the skin/scale issue. Not yet, at least.

edit 2: also if anyone has any quick tips on how to make a temporary, emergency bandage for ball pythons, that is also appreciated. I'm researching it right now.