I know the idea of "idiopathic" and having no real answer to attach to your symptoms isn't a comforting one. But as long as you have the appropriate treatment, the time without that answer passes a little easier.

So your focus at this point might best be directed at finding the treatment that works best for you. Of course, continuing your search for answers should continue.

The skin biopsy would at least provide you with details as to severity and may open doors for better treatments like IVIG. I understand that may not be possible in your current location, but once you move it may become a reality.

Maybe I missed it somewhere, but what are the exact symptoms you have with your stomach? I only recall reading about pain...what else is going on there and what tests have you had done. I ask because what is going on there, may help direct you to the overall problem elsewhere.