Atrophic gastritis (AG), also called metaplastic atrophic gastritis (MAG), is a chronic (long-lasting) inflammation of the stomach lining, which leads to the thinning and loss of protective cells that ...

Colitis is an inflammation of the lining of the colon. A person with colitis will typically experience abdominal pain, discomfort, and diarrhea. People with colitis may experience mild chronic pain or ...