spamasaurousrex 2009-11-16 09:47:10

Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder. Also called spastic colon, it is a functional bowel disorder characterized by chronic abdominal pain, discomfort, bloating, and alteration of bowel habits in the absence of any detectable organic cause.[1] In some cases, the symptoms are relieved by bowel movements.[2] Diarrhea or constipation may predominate, or they may alternate (classified as IBS-D, IBS-C or IBS-A, respectively). IBS may begin after an infection (post-infectious, IBS-PI) or a stressful life event or may begin at onset of maturity without any other medical indicators.

Although there is no cure for IBS, there are treatments which attempt to relieve symptoms, including dietary adjustments, medication and psychological interventions. Patient education and a good doctor-patient relationship are also important.[2]

Several conditions may present as IBS including celiac disease, mild infections, parasitic infections like giardiasis[3], several inflammatory bowel diseases, functional chronic constipation, and chronic functional abdominal pain. In IBS, routine clinical tests yield no abnormalities, though the bowels may be more sensitive to certain stimuli, such as balloon insufflation testing. The exact cause of IBS is unknown. The most common theory is that IBS is a disorder of the interaction between the brain and the gastrointestinal tract, although there may also be abnormalities in the gut flora or the immune system.[4][5]

IBS does not lead to more serious conditions in most patients.[6][7][8][9][10] But it is a source of chronic pain, fatigue and other symptoms, and it increases a patient's medical costs,[11][12] and contributes to work absenteeism.[13][14] Researchers have reported that the high prevalence of IBS,[15][16][17] in conjunction with increased costs produces a disease with a high societal cost.[18] It is also regarded as a chronic illness and can dramatically affect the quality of a sufferer's life.