肠道易激综合征(IBS)系肠道功能紊乱所致,有不能用结构或生化异常来解释的肠道症状。常伴有精神障碍。临床十分常见,约占胃肠门诊病人的13％～52％~[1]。 西方国家报道,IBS患者约占人群的15％～20 ％。女性稍多于男性。在中国男女大致相等。在印度和斯里兰卡男性稍多。在美国每年至少有200万患者因IBS就诊,就诊的IBS患者中女性约占75 ％～80 ％。IBS呈慢性反复发作过程,症状一般轻微,病程长而稳定,一般在12～20个月以上。9％患者病初无典型的IBS症状,而多数患者病初即有典型的IBS症状,而后自发消失[2]。IBS可表现为终身状态,但预后良好。 Intestinal irritable bowel syndrome (IBS) is caused by intestinal dysfunction, with intestinal symptoms that can not be explained by structural or biochemical abnormalities. Often accompanied by mental disorders. Clinical is very common, accounting for about 13% of gastrointestinal clinic patients to 52% ~ [1]. Western countries reported that IBS patients account for about 15% to 20% of the population. Women are slightly more than men. In China, men and women are roughly equal. There are slightly more males in India and Sri Lanka. In the United States every year at least 200 million patients due to IBS treatment, treatment of IBS patients accounted for about 75% to 80%. IBS was recurrent chronic process, the symptoms are generally mild, long duration and stable, usually 12 to 20 months or more. 9% of patients had no typical symptoms of IBS at the beginning of the illness, and most patients had typical IBS symptoms at the beginning of the disease and then spontaneously disappeared [2]. IBS can show a lifetime status, but the prognosis is good.