How does inflammatory bowel disease differ from ibs?

Significantly. In ibs the bowel is anatomically normal, but responds more intensely to stimuli. Anemia, weight loss, and bloody diarrhea are unusual. Surgery is not a part of therapy. In ibd (inflammatory bowel disease) at least some layers of the intestine are diseased. Ulcerative colitis can be cured by removal of colon and rectum. Crohn's disease may involve any part of the GI tract and cannot be cured.
Function vs Organic. Ibs is purely a functional disorder or bowel regularity and pain perception. Ibd is an inflammatory condition of the bowels that causes many sideffects as pain, bleeding, diarrhea, weight loss.
Very different. Inflammatory bowel disease is a few well defined conditions characterized by inflammation , visualized and confirmed by biopsies in the colon. The long term complications are often severe and the treatments are well defined irritable bowel syndrome, though more common, is not well defined. Main symptoms are constipation and or diarrhea. Similar names very different conditions.

Related Questions

Is irritable bowel syndrome and inflammatory bowel disease the same?

Not even close! Inflammatory bowel disease (see my earlier healthtap answer) is a systemic inflammation of the gut. Irritable bowel syndrome is a symptom complex without inflammation. Symptoms for both may be similar/ recurrent. The term "colitis" (=colon inflammation) is often erroneously applied to ibs patients. Ibd patients can have ibs, & ibs patients can develop ibd but the two are etiologically unrelated. Read more...

Are irritable bowel syndrome and inflammatory bowel disease the same thing?

No. Irritable bowel is physiologic and inflammatory bowel disease is pathologic. The former can make life un-enjoyable, the latter can be life threatening.The two terms are not interchangeable. Differentiating the two is critical to proper medical management. Read more...
No. Ibs is purely a functional disorder without any antomic or pathologic cause. Where as ibd involves dis regulated inflammation of the GI tract with associated symptoms. Read more...

Can you let me know is irritable bowel syndrome and inflammatory bowel disease the same thing?

No. Just similar. Sounding names. Ibs is a functional disorder that causes pain and motility problems such as diarrhea or constipation. Treatment is largely symptomatic. Ibd is an inflammatory disorder of unknown cause, such as crohn's disease or ulcerative colitis. This is a much more serious condition when you get it, and treatment could require anti-inflammatory drugs, steroids, and surgery. Read more...

Sufferring from inflammatory bowel disease, doctors diagnosed as maybe ibs, celiac chrons disease. A lot of food allergies. Gluten, dairy intolerance?

Colon problems. Since the illnesses you mentioned in your question are all different, it sounds as though your problem really hasn't been diagnosed yet at all. If you are still having problems, be sure to see a gastroenterologist. If you have already seen one and still can't sort this out, get a second opinion from another gastroenterologist. These diseases are not mysteries! Keep going until you feel better. Read more...