Some time back (a year or 2) we had a GSD that had a major allergy problem. Our vet referred us on to a skin specialist, who ran a series of tests that were somewhat inconclusive and left us more than $1,000 out of pocket. We changed her diet, there were some improvements in her condition,went back to the specialist & the recommendation was more tests with no guaranteed positive results for the dog at an estimated cost of several thousand dollars. We decided to go back to our vet. He suggested monthly cortisone injections. He advised that there would be a shortened lifespan of maybe 10% but the dog would have a much better quality of life. Well, we decided to take that course of action & have not regretted the decision. The coat grew back to a quality coat, the dog ate the same diet as our other dogs & is still active & alert. $35 a month for injections. The diet for our dogs is a home devised variation of the Raw Meaty Bones philosophy.