Overlap between irritable bowel syndrome and functional dyspepsia including subtype analyses

Background and Aim Coexistent gastrointestinal symptom profiles and prevalence or associated factors for the overlap between each functional dyspepsia (FD) and irritable bowel syndrome (IBS) group remain unclear. Thus, the aim of the present study was to evaluate the clinicodemographic features of FD, IBS, and IBS‐FD overlap and assess the risk factors thereof, including subtype and genetic polymorphisms for IBS‐FD. Methods Consecutive patients...