I have acquires a new chicken with a severe case of Scaley lag mites and have been doing a veg oil dip daily for the last 8 days. The majority of her legs are 90% improved. However, she started with a cream colored hard growth on the upper back part of her leg and it has not gotten smaller. It has change colour to black as well. Additionally, she had two deformed toes (bulbous black growths on tips of toes instead of nails) which also have not changed. I am wondering if these are just permanent scarring or something else. I have attached a before photo to show, this growth is now blackish. Thank in advance for any help.