１ 引言 功能性胃肠病（ｆｕｎｃｔｉｏｎａｌ ｇａｓｔｒｏｉｎｔｅｓｔｉｎａｌ ｄｉｓｏｒｄｅｒｓ，ＦＧＤ）是一类临床上常见的疾病。其定义和分类尚无统一意见。当患者有胃肠道症状如腹部胀闷、不适、隐痛、恶心、烧心、早饱、暖气、腹泻、便秘等，通过必要的检查排除感 1 Introduction Functional gastrointestinal disorders (FGDs) are a group of clinically common diseases. There is no uniform opinion on its definition and classification. When the patient has gastrointestinal symptoms such as abdominal bloating, discomfort, pain, nausea, heartburn, early fullness, heating, diarrhea, constipation, etc., through the necessary checks to exclude the flu