did you ever find the diagnosis? I suffer from the same problems
My hands/fingers do the exact same thing, except I get the blisters on my fingers... My fingers swell 3 x their normal size. It is very painful. I have had no luck with finding out what is wrong. I have been tested for several different things, however, my blood work came back normal. This is clearly not normal and I am tired of being embarrassed and in pain :( Please help!
What was your diagnosis and treatment? This looks like what my husband has exactly.