Gastritis or dyspepsia, an disordered inflammation or irritation of the lining of the stomach, is not a single disease. Chronic superficial gastritis is a common medical problem. Up to 10% of people who come to a hospital emergency department with abdominal pain have gastritis. The word comes from the Greek gastro- meaning of the stomach and -itis meaning inflammation. In some cases, gastritis can lead to ulcers and an increased risk of stomach cancer. The most common symptoms are abdominal upset or pain. Other symptoms are belching, abdominal bloating, nausea, and vomiting or a feeling of fullness or of burning in the upper abdomen. Depending on the cause, it may persist acutely or chronically. It can be caused by drinking too much alcohol, prolonged use of nonsteroidal anti-inflammatory drugs such as aspirin or ibuprofen, or infection with bacteria such as Helicobacter pylori. Sometimes gastritis develops after major surgery, traumatic injury, burns, or severe infections.