Snapshot A 55-year-old woman with a history of osteoarthritis comes into her primary care physician's office with a complaint of new indigestion. She notes that, for the past week or so, she has been experiencing discomfort in her upper abdomen, associated with meals. This has not affected her appetite, and she has not vomited up any blood or experienced any weight loss. She denies any heartburn symptoms or substance use. Her past medical history is noteworthy for osteoarthritis in her knees, and she says she has been taking naproxen as prescribed everyday for the past year and a half. She takes no other medications and is otherwise relatively healthy. (Acute gastritis) Introduction An inflammatory condition of the stomach No universally accepted classification system login to view 1 more bullet Most classification systems still distiguish by time course in order to characterize inflammatory cell infiltrate most likely present login to view 27 more bullets Presentation Symptoms login to view 2 more bullets Evaluation Endoscopy with biopsy login to view 1 more bullet H. pylori detection login to view 2 more bullets Treatment Acute gastritis login to view 6 more bullets Chronic gastritis login to view 10 more bullets