第九章功能性消化不良功能性消化不良（functionaldyspepsia，FD）是指有持续存在或反复发作的上腹痛腹胀早饱、嗳气、厌食、胃灼热泛酸、恶心及呕吐等消化功能障碍症状，经各项检查排除器质性疾病的一组小儿消化内科最常见的临床综合征。
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