Chronic gastritis is an inflammation of the lining of the stomach that occurs gradually and persists for a prolonged time.
Chronic gastritis may be caused by prolonged irritation from the use of nonsteroidal anti-inflammatory drugs (NSAIDs), infection with the bacteria Helicobacter pylori, pernicious anemia (an autoimmune disorder), degeneration of the lining of the stomach from age, or chronic bile reflux.
Many people with chronic gastritis have no symptoms of the condition.
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