New classification Rome IV functional dyspepsia and subtypes
Functional dyspepsia (FD) is one of the gastrointestinal disorders and can be severely disturbed with quality of life (QOL). Visceral hypersensitivity (1), disturbed gastric accommodation (2) and disturbed gastric motility are mostly reported in FD patients (3-5). According to the Rome III classification, FD symptoms were chiefly consisted of four symptoms, such as bothersome postprandial fullness, early satiety, epigastralgia and epigastric burning (6). FD patients were divided two groups.