Oh that poor baby! If it's both a bacterial AND fungal infection, did the vet give you both and antibiotic and an anti-fungal?
A mold allergy certainly could have contributed to it. If I'm in a house with mold I'll have a pretty severe reaction within a couple hours that includes a massive itching and eczema breakout. Have you noticed any difference since you moved?
Hedgie Mommy to little Piglet
* Abby *