I was shocked to have a recurrence of stomach pain after my gall bladder was taken out. I was diagnosed with kidney stones. That's when I discovered that stones less than 2mm cannot be detected even by MRI. Since then I have avoided oxalates in my diet. That means green beans, carrots, potatoes and yams or sweet potatoes. There are others on the internet...
Since going gluten free, my rashes receded into a dot or two. Since taking lukewarm showers as opposed to nice hot ones, I no longer itch. Recently, to head off future itches, I apply coconut oil from the health food store and that seems to work.