Good morning ekko!
I believe I would find another Dr! When I read your post here, the thing that came to mind was "Carpal tunnel syndrome" Have you been checked for that? I'm guessing as a painter who uses repetive motion on a daily bases this might be a possibilty for you.
The only other thing you might have checked out is your Cervical Spine, and see if there is a problem there, as it can certianly affect your arms and hands.
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