Posted 9/23/2007 11:45 AM (GMT -8)
IBS is a disease of exclusion. If examinations do not reveal any pathology ie: no strictures, no inflammation, no ulceration, no tumours, no cancerous cells, no diverticulum, etc then it is said to be a functional disease and the diagnosis is IBS.
With IBD however, there is pathogenesis. It is a diagnosis of inclusion. Disease activity is evident in scar tissues, inflammation, ulcerations. There are often abnormal blood values, there is often fever.
IBS is probably a disease of the body's neuro-electrical system. The body has all the equipment, but it isn't working in its proper rythum, sort of like an engine with a faulty timing belt. It is often associated with physical and emotional stresses. Lifestyle is much more often a factor in IBS and indeed changes in lifestyle and diet, can often control symptoms of IBS.