Background/Aims: Irritable bowel syndrome (IBS) is the most common functional gastrointestinal disorder. and its definite etiology is still unclear. It has been shown that personality characteristics can affect the disease presentation and attitude of patient toward symptoms. This study was undertaken to evaluate the personality characteristics in patients with IBS in Shiraz. https://www.roneverhart.com/Toshiba-AL13SX-AL13SXB30EN-300GB-15K-RPM-SAS-12Gb-s-512n-128MB-2-5-Hard-Drive/