Atrophic gastritis is a medical condition characterized by inflammation and damage to the lining of the stomach. This can result in symptoms like abdominal pain, nausea, and vomiting. There are several synonyms for atrophic gastritis, including chronic gastritis, type A gastritis, and autoimmune gastritis. These terms are used interchangeably to describe the same condition, which is most commonly caused by an autoimmune response or chronic infection with Helicobacter pylori. Other synonyms for atrophic gastritis may include gastric atrophy, stomach inflammation, and mucosal atrophy. Early diagnosis and treatment of atrophic gastritis are essential to prevent further damage to the stomach lining and reduce the risk of developing complications such as peptic ulcers and stomach cancer.