welcome to the forum
question - have any of the docs sent you for nutrition tests?
what's your diet like, good or so-so? how about activity level?
the only time I've ever dealt with the hug and shortness of breath, it turned out to be a magnesium thing.
same deal when I had my worst gi issues (but for opposite reasons - long story).
I too have had itching palms and soles but I haven't done the work to track if that particular issue matched my magnesium troubles, time wise.
can't hurt to rule out nutrition issues at least, so that at least you know what non-nutrition-linked symptoms you have left on the list with when it comes time for the docs to nail down a dx.
there's tons of info available here, if you decide nutrition looks like an avenue you'd like to pursue.
again, welcome to the forum