10.1%,功能性腹泻4.1%,FD合并功能性肠病6.8%。? 男女两性间各功能性胃肠病患病率无显著差异。? FD在20~50岁为最高患病率年龄段。? 功能性肠病在各年龄段差异无统计学意义。Р病因Р具体的病因不明,可能与下列因素有关:?胃肠道动力异常? abnormal gastrointestinal motility (Snape WJ,et,al,.1976);?内脏痛觉阈增加? increased visceral pain sensation (Mayer EA,et al,1990);?血清胃肠道激素和肽类水平改变? changes in serum levels of gastrointestinal hormones and peptides (Harvey RF,et al,1973);?回肠末端肥大细胞增多? increased numbers of mast cells in the terminal ileum (Weston AP,et al,1993); ?心理疾病的躯体化表现? somatization of psychological disorders (Whitehead WE,et al,1991;Schwarz SP,et al,1993)Р常见疾病与症状Р食道痉挛 oesophageal spasm;? 心因性呕吐 psychogenic vomiting;? 非溃疡性(功能性)消化不良 nonulcer dyspepsia;? 肠易激综合征 irritable bowel syndrome;? 痉挛性肛痛 proctalgia fugax? 以功能性消化不良和肠易激综合症最为常见? ? 常见症状:? 腹部不适abdominal fort 恶心nausea? 烧心heartburn 腹泻diarrhea 便秘constipation
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