I have the digestion issues as well, no fun! My pupils were + on the testing as well.. I do have this issue... where I will focus on something I'm doing up close to my face and then it's like my eyes won't accomodate back when I try to look at something at a different distance.. it takes a few minutes.. it's really strange... I think my sweat test was normal, and maybe that's why I wasn't officially diagnosed? Who knows. Interesting about the bradycardia- i get that as well sometimes.. I feel a little lightheaded with it, and my head feels really weird.. I always know that's when I'm having it.. then it jumps back to tachycardia quickly after those episodes.. not a lot of fun.. I feel like every single system is invovled with all of this!