Gastritis is a general term for inflammation of the lining of the stomach. The inflammation in gastritis is most often the result of infection with the same bacterium that causes most stomach ulcers. Regular use of certain pain relievers and drinking too much alcohol also can contribute to gastritis. Gastritis may occur suddenly (acute gastritis) or appear slowly over time (chronic gastritis). In some cases, gastritis can lead to ulcers and an increased risk of stomach cancer. For most people, however, gastritis isn’t serious and improves quickly with treatment.
Certain conditions and activities may increase your risk of developing gastritis. Other risk factors include:
Gastritis doesn’t cause noticeable symptoms in everyone. The most common symptoms are: