
Keywords: FD، اختلال عملکردی; Chronic Abdominal Pain; Narcotic Bowel; Functional Abdominal Pain; Centrally Mediated Pain; Rome IVCAPS, centrally mediated abdominal pain syndrome; FD, functional dyspepsia; FGID, functional gastrointestinal disorder; GI, gastrointestinal; IBS, irritable