At Mayo, I had the Qsart,,, (normal),, sweat test,, only place showed abnormal was bottom of feet and lower legs,, in my opinion, it has progressed from then to now, but once you get that normal result,, its pretty hard to convince them otherwise,, plus my ANA was neg, parenteoplastic normal,, everything normal, only low was cortisol,, but stim test showed it to be ok,, so I dont know