I sent you a pm, don't know if you got it. At least I think I sent it!
If it's infection, atopica will suppress the immune system, not good...
I don't recall, have you tried cocnut oil externally?
Neem oil, external and/or internal? If it's mites, oils might smother, even maybe imple liquid vit E?
Some OTC anti-fungals might help? I've never tried the athletes foot one. But the women's yeast one worked really well for my GSD' chronic ear problems. I supect those cremems are for different types of yeasts.
I have,t read all the replies, I might have missed something...