You've tried so many things I must ask if you have done or heard of this:
My doctor convinced me to try a computer that diagnoses and treats illnesses through electrodes attached to your body. I thought it sounded crazy, but my dr hasn't steered me wrong yet, so I trusted him. Wow! This is really the medical care of the future! It spotted my candida problems immediately and "zapped" them so that right now I'm the clearest I've ever been. It's purely natural and non-invasive. Check out quantumsource4life.com for the science, what it can do, and practitioners in your area. Seems like it could diagnose what no one has been able to do so far.
Seriously, this is truly life-changing as it will change the way the "medicine" is practiced....once we and traditional dr's get over the non-productive ways.