Gastritis is a digestive condition that involves inflammation of the stomach lining. Symptoms include indigestion, burning stomach pain, nausea, and frequent burping. For some people, dietary changes can help. There are different types and causes of gastritis. A common cause is infection with Helicobacter pylori (H. pylori) bacteria. Other causes include the use of nonsteroidal anti-inflammatory drugs (NSAIDs), a high consumption of alcohol, and some...