[anonymous]

“My veterinarian has done done preliminary research and it seems there’s not really a treatment for this, and the theory is that it’s a secondary condition resulting from his horrible allergies”.

There is your answer, treat the primary condition. Allergies.
See what your vet recommends, maybe you need a referral to a veterinary dermatologist.

Stop looking for natural miracle cures, there are none.

PS: If your vet is homeopathic then consider getting another opinion from a science based traditional vet.