<unk>  bowel<unk>  (IBS) may be classified according to Rome IV criteria into IBS with predominant constipation , IBS with predominant diarrhea, IBS with mixed bowel habits, and unclassified IBS. In addition, IBS occurring subsequent to gastrointestinal infections is known as post infectious-IBS (PI-IBS). The rationale behind these different sub-types is to maintain consistency of patient selection. This increases understanding of pathophysiological mechanisms, aids in effective diagnosis, treatment, and patient recruitment for clinical trials.
Irritable bowel syndrome classification
Crohn's disease classification
Inflammatory bowel disease classification
Ulcerative colitis classification
Peptic ulcer classification
Ischemic colitis classification
Gastritis classification
Diverticulosis classification