Gastritis Gastritis means inflamation of the stomach. It means that white blood cells move into the wall of the stomach as a response to some type of injury. Gastritis does not mean that there is an ulcer or cancer. It is simply inflammation–either acute or chronic. Gastritis Symptoms The symptoms of gastritis depend on how acute it is and how long it has been present. In the acute phase, there may be pain or gnawing in the upper abdomen, nausea and vomiting. In the chronic phase, the pain may be dull and there may be loss of appetite with a feeling of fullness after several bites of food. Very often, there are no symptoms at all. If the pain is severe, there may be an ulcer as well as gastritis. Source : gicare.com