Hi OP,
I have an 18 month old golden retriever who has a history of stomach problems - he is very sensitive to foods and is on a special hypoallergenic diet. He also has atopic dermatitis (atopy).
Around 9 months ago we noticed that he was chewing his paws (dark staining between the toes indicated this too). He would also have gunky ears and occasionally sore eyes. In addition to this he would also have sore patches of skin in his armpits, on his stomach and in the crook of his elbows etc. The would start pink and sore then end up scabby. In general his skin was black where is should have been pink.
Getting his diet right definitely helped his eyes and his ears, but his skin was still a problem.
We starting bathing him with Malaseb shampoo (I believe this is only available on prescription). The important thing with the shampoo is to concentrate on the sore areas, lather it in well, leave it to soak for 10 minutes (v important) before washing off. We also used Fuciderm gel and/or hibiscrub to topically treat the sore patches. Once when his skin was very sore he was treated with Rilexine antibiotic. All of these treatments helped but we wanted to get to the bottom of what was causing the problems in the first place.
Our vet referred us to a specialist skin vet. He did a patch test, where a patch of skin was shaved on his side, and very small amounts of potential allergens were injected into the top layer of skin. I think (if my memory is correct) there were 35 different dots. We had to monitor which of these dots flared up, and when, and make a note of these. Following the test the skin vet identified that my dog's skin reacts very badly to house dust mites, storage mites and a type of plant he encounters on his walk. A potential solution to this is regular allergy injections, which should increase his resistance to these specific allergens. We are due to start the injections soon.
Based on my dogs history I have quite a bit of knowledge in this area, unfortunately
so please feel free to PM me if you want any advice or further information.
All the best x