“…The inclusion of non physical findings as part of the diagnostic criteria for IBS may also be useful as this disorder is often initially misdiagnose (Waller & Misiewicz, 1969). Although the incidence of organic disease in patients diagnosed with IBS is reported as being only 3%-6% (Kruis et al, 1984;McHardy, Browne, McHardy, Welch, & Ward, 1962), as many as 30% of patients eventually diagnosed as having IBS present with abdomianl scars (Chaudhary & Truelove, 1962;Waller, 1971).…”