Revolution does not treat mange (Demodex) in cats see
http://www.revolution4cats.com/displ...ies=FL&sec=050.
I would definately still do a blood test for the thyroid issue. I am interested to know what this turns out to be.
Also Demodex tends to leave red irritated sores see
http://users.dslextreme.com/~wolfsto....html#Symptoms
I would be really surprised if that is what it was.
I am only a vet tech but I am leaning towards the thyroid issue.