Hi.
I don't know what's behind all your symptoms; obviously, something's amiss, and when doctors can't find a ready cause, they just treat symptoms. Testing should reveal if there's anything to see, like lesions, etc. If nothing shows up, and your doctors call it idiopathic, it's probably dietary or environmental. A good guess would be sensitivity to wheat gluten, which affects almost everyone to a greater or lesser degree. The good news is that it's something you can do something about. There is an abundance of excellent advice within this site.

I recommend the book, "Wheat Belly," by William Davis, available at Amazon for about $15. It may help clear things up for you; at the least, it should help some of the symptoms.
Steven