You poor thing! I didn’t know casts had nylon in them, but that makes sense with that “stretchy stuff” they layer on when they apply it. You would think there would be some sort of alternative, though. I guess prayer is the only answer I have now, so I will pray!
Oh, and I’m sorry if I came off sounding like a know-it-all, saying it wasn’t an allergy….just shows you how much I really do know, and today I guess it wasn’t all that much, LOL!