gastritis  acute
Acute gastritis is a sudden inflammation or swelling in the lining of the stomach. It causes severe and nagging pain. However, the pain is temporary and usually lasts for short bursts at a time. Acute gastritis occurs when the lining of your stomach is damaged or weak. This allows digestive acids to irritate the stomach. There are many things that can damage your stomach lining. The causes of acute gastritis include: medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids.