I've always been told that it's IBS until they can prove otherwise by finding disease (inflammation, ulcers ect..).
Which is why I have such a hard time believing we can have both. How can we have IBS when they HAVE found disease? For me they would have to be 100% sure that there was no inflammation going on ANYWHERE in my small and large intestine. Which is no easy task, considering how long it takes for them to diagnosis IBD in a lot of people to begin with. It can be easily missed, even with the most accurate tests.
That's just my opinion of course. I went for almost a decade being told I just had IBS, meanwhile not being treated properly for the Crohn's I actually did have. Which led me to become very ill. At this point if I had a doctor tell me my symptoms were IBS, I'd find a new doctor. Again, JMHO.
Diagnosed with mild Crohn's Disease 2/06 after sever GI bleed. Has been suffering since 1998. History of rectal fistula and gallbladder removal. Currently taking Asacol and Questran.