for about one year I have had 6 episodes of N/V and diarrhea. at same time I get very hot and start sweating profusely, and 4 times I fainted. these episodes are sudden and violent. I have had colonoscopy which was normal, (, removed 2 polyps). I had the 24-hour urine test indicating potential carcinoid tumor/syndrome. last week I had the ostreoscan, which was also normal. Since then I have had another episode of vomiting,sweating,fainting,diarrhea. So what to do next. I am 75 y/o female and not a hypochondriac! Thanks, Fm,.