Think you could get pics of the bumps next time they appear? The vet might find pics helpful in a diagnosis. It might be hard to get a good shot, especially if they aren't very large, but it might be worth a try.
Is it possible they could be hives?
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
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