The main pathophysiological mechanisms of irritable bowel syndrome (IBS) are abnormal stomach intestine mobility,disturbance of internal organ perception and parasecretion of stamach intestine.

目前认为胃肠动力异常和内脏感知障碍、胃肠分泌异常是肠易激综合征(IBS)产生的主要的病理生理机制。