Atrophic gastritis can also occur as heartburn, but it is rare and usually occurs as a burning or scorching sensation when bile reflux is present, especially in GERD. Atrophic gastritis is a chronic gastritis with non-specific clinical symptoms, similar to those of chronic gastritis in general. Patients may experience vague pain in the upper abdomen, epigastric distention, acid reflux, belching, early satiety, indigestion, nausea, etc. Atrophic gastritis refers to chronic gastritis in which the gastric mucosa has undergone atrophic changes. Patients are advised to actively treat it to avoid further aggravation of gastric mucosa atrophy into severe atypical hyperplasia, which is a precancerous lesion of gastric cancer.