Since July of 2015, I've been dealing with almost daily episodes of diarrhea, sweats, and gas that wake me between 3 and 5am.  Afterwards, I have chills for hours. The only time I don't have this problem is when I'm on a round of antibiotics (but it returns shortly after I finish them) and when I don't eat dinner.  I rarely eat breakfast or lunch now, because I don't feel hunger sensations and because these symptoms occur during the day if I eat and are disruptive in my life.  In the fall of 2016, my lower back began causing sciatica pain that wakes me in my sleep as well - MRI showed spondylitis (which was new), stenosis, and bulging discs (which I knew about before). I've noticed that the GI and back issues seem to ebb and flow together, though I'm not sure they're related (when I'm on antibiotics the back feels better too and I actually sleep through the night!). I've tried to identify offending foods by elimination, but it seems any food will cause the same symptoms. I've had stools checked, MRI of some sort, bloodwork, video endoscopy, endoscopy/colonoscopy, and an array of other tests. Still no answers.  I'm tired and would love to figure out what is causing this.