Gastritis occurs when the lining of the stomach becomes inflamed or swollen.
Gastritis can last for only a short time (acute gastritis), or linger for months to years (chronic gastritis).Causes, incidence, and risk factors
The most common causes of gastritis are:
- Certain medications, such as aspirin, ibuprofen, or naproxen, when taken over a longer period of time
- Drinking too much alcohol
- Infection of the stomach with a bacteria called Helicobacter pylori
Less common causes are: