[anonymously]

Environmental allergies wax and wane, they get worse with age.

Tried raw diets and bones, ended up at the emergency vet x2 ($)
No thank you. To each his own.

PS: I am sure there is a veterinary dermatologist closer to you. Just ask your current vet for a referral……or maybe she can suggest treatment for the Canine Atopic Dermatitis your dog appear to be suffering from (based on your description of symptoms)