Haven't heard any news of anyone looking for him, then?
I forget...did he have a collar or anything at all?
Years and years ago, our old lab, Gifford, had licking, scratching, stinky "issues". Our vet finally figured out it was an allergy to commercial dog foods. Nowadays they sell specially formulated dog foods for allergy-prone dogs.
We haven't had very good luck with Predisone. Samantha was on heavy doses during her chemotheraphy, and she was constantly thirsty and couldn't quench her thirst no matter how much water she drank, she "leaked" no matter how often I took her outside to relieve herself; she ate but was never full. Of course, Homer may not have any problems taking it, but the dog food route might be easier and cheaper to try first.