We have had three Shiba Inu’s and have experienced any and all of the same issues with each one. With each dog it has resulted from both food and environmental causes, but primarily food. I am having great success feeding Annamaet Salcha Poulet Formula currently. I know you can’t feed chicken, but look into the brand name website at all the variety of labels/ingredients and winnow them down to what you know so far regarding reactions.
What got my attention first off was that the label specifically mentioned ear infections, our current Shiba’s primary issue.
Do see a veterinary dermatologist as another forum contributor mentioned. Our dermatologist was quite helpful from the skin angle, but our regular vets have also been quite helpful, and the combination of their experiences works for us. The derm was able to give us products to relieve the awful pink tummy and misery of itching.
Do blood work testing in addition to consultation and you won’t have to depend upon hit and miss food buying, even though the two types of docs may have varying opinions about its efficacy. You are right that is food is the major factor.
Yes, this is going to be expensive.
Good luck. Your dog will appreciate your efforts and will be happy again when you hit the right formula.
