sorry to hear about all your problems. I understand about all test coming back negative. I have Fibromyalgia, had a small stroke, my right foot leg goes numb said to be poor circulation and compression socks do help but numb around mouth/nose no help and it is not all time. I had a rash on both forearms itching very bad tiny bumps then spread to area raised spot with clear white little drainage. Tried lotions, creams, antibiotics, a skin biopsy with no treatments working or answers from doctors. I thought the rash was shingles doctors said no because it was both arms and no place else. A friend thought I got poison eve and said take a shower head to toe with orginal Dawn dish soap. For 88 cents couldnt go wrong and they treat wild life animals with it couldn't do much harm. After one shower itching was reduced-more showers it began to dried up and disappeared. Sorry this got long. Good Luck at finding anwers.