I was first diagnosed with IBS or Ulcerative Colitis in 1986. Prior to that time, I would have flare ups and thought it was always the flu. Extreme cramps, diarrhea, etc. Finally came to a head one weekend, when I ended up dehydrated and couldn't get out of bed. My doctor had been treaing me for ulcers but the ER doc realized what it was right away. Then did all the tests, etc. which came back fine.