I’m no doctor but that sounds like an auto-immune disorder. I got with a pet homepath to help my cat recover from chronic wheezing. Our healer passed away sadly but I learned a lot about how to support our pets immune system. Maybe you can find one for a consult. Have you tried home cooked meals, removing toxins from the house, switching to stainless bowls, feeding home grown probiotics like milk kefir, try turmeric & pepper, goat milk from primal? My dogs don’t do well on grain free but we feed Tender and True and they do great but I cook for them too.
