[anonymous]

“I feed her Acana and Orijen mostly but I remembered when she was a pup she mostly ate raw and didn’t have any issues at all”

That’s because allergies don’t tend to show up till later (age 1-4) and they tend to get worse with age.

Diet has nothing to with yeast, yeast is caused due to a breakdown in the immune system, same with the skin infections and ear infections.
I’m not a scientist, the dermatologist can explain it more clearly.