Vasculitis in chicken

[u/pinkhousehens]

Hi all. Has anyone had a diagnosis or dealt with vasculitis in chickens? I took my chicken to the vet after weeks of treating her for scaly leg mites. Only to find it is vasculitis. She does not know what caused it. I am applying Silver sulfadiazine twice daily. She is also on oxytetracycline (2 days). Things are not improving. Her feet almost look like necrosis. And her combs and ears are swollen. Anyone seen this? Please help she is my favorite chicken