Also known as: Bowel; Functional Syndrome / Irritable colon / Colitis mucous / Mucous colitis / Irritable bowel syndrome NOS / IBS / Colon spastic / Spastic colon / Irritable colon syndrome / [X] Somatoform autonomic dysfunction (& named variants) / Irritable bowel / Irritable bowel syndrome / (Irritable bowel syndrome) or (pseudomembranous colitis) / Irritable colon (disorder) / (Irritable bowel syndrome) or (pseudomembranous colitis) or (spastic colon) / Functional gastrointestinal disorder / Functional GIT disorder NOS / (Functional GIT disorder NOS) or (megacolon excluding Hirschsprung's disease) / Functional Gastrointestinal Disorders / Functional gastrointestinal tract disorder NOS (disorder) / Functional disorder of gastrointestinal tract (disorder)