Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs GastritisUpdated: 2017-06-13OverviewGastritis is any of a group of conditions in which the stomach lining is inflamed. Causes include infection, injury, regular use of pain pills, and too much alcohol.SymptomsSymptoms include upper belly pain, nausea, and vomiting. Sometimes, there are no symptoms.TreatmentsTreatment depends on the cause. Antibiotics and antacids might help. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use