Most allergies are environmental and get worse with age not better. My dog started treatment at age 4. Two years later she is stable and only needs the immunotherapy about once a month. Her specialist/dermatologist who we just saw, she only sees him once a year and he always returns phone calls, says her hair and skin look beautiful!
I went through it with my dog, spent all kinds of money on different dog foods, shampoos, dehumidifier, air purifier etc. Went back and forth to the regular vet and got incorrect information.
Nothing worked till I took her to see a specialist/dermatologist and had the skin testing done and she responded to immunotherapy, gradually showed improvement.
Initially, the testing can be expensive, but the maintenance is not bad.
I hope you will click on my screen name, replies created and read the posts related to allergies, I have made many recommendations and have included some good articles.
Example: I would suggest that you make an appointment with a specialist/dermatologist.
Or consider consulting a homeopath http://www.vitalanimal.com http://theavh.org/
I would be leery of any saliva kits or any mail-in test that doesn’t require a physical examination by a veterinarian /forums/topic/nutriscan-results-suggestions/
/forums/topic/please-help-2/
/forums/topic/4-year-pld-hound-mix-hot-spots-itching-shedingvet-presribed-pills-worked-some/
