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肠易激综合征(irritab1e bowel syndrome,IBS)是最常见的功能性肠道疾病之一,以腹痛或腹部不适伴排便习惯改变为特征,缺乏可解释症状的形态学改变和生化检测异常(中华医学会消化病学分会胃肠动力组,2008年)。IBS的发病尚不能用某一种机制完全解释,可能与肠道动力异常、内脏感觉异常、感染、神经-内分泌、遗传、饮食及精神心理因素等多种因素有关。临床表现主要为腹痛、腹泻和便秘,并可涉及其他消化道症状,
Irritable bowel syndrome (IBS) is one of the most common functional bowel diseases characterized by changes in bowel or abdominal discomfort with bowel habits and lack of morphological and biochemical abnormalities that explain the symptoms Medical Association Gastroenterology Group Gastrointestinal Motility, 2008). The pathogenesis of IBS can not be completely explained by a certain mechanism, and may be related to various factors such as abnormal intestinal motility, visceral abnormalities, infection, neuroendocrine, heredity, diet and psychic factors. Clinical manifestations mainly abdominal pain, diarrhea and constipation, and may involve other gastrointestinal symptoms,