IBD refers to a non-infectious inflammation of the gastrointestinal tract. There are two major types of IBD:
- Ulcerative Colitis: This involves the inner lining (mucosa) of the colon only and begins in the rectum and spreads upwards in some cases to involve other areas in the colon. Thus there can be proctitis (rectal involvement only), left sided colitis and universal colitis (whole colon).
- Crohn’s Disease: This involves any layer of the gut and can involve not only the colon but also the small bowel, stomach etc. Thus can be colitis (colon involvement), enteritis (small bowel involvement) or Ileo-colitis (both small bowel and colon)and gastro-duodenal Crohn’s.