The healing time for gastritis varies from a few weeks to several months; however, without proper treatment, the stomach may not heal at all reports the U.S. National Institutes of Health. To determine the healing time for gastritis, doctors can perform stool tests, H. pylori tests, an esophagogastroduodenoscopy and a complete blood count profile.
While a patient's gastritis condition is healing, the patient may experience a wide variety of symptoms including loss of appetite, vomiting, nausea, stomach pain, black stool and vomiting blood. The black stool and vomiting blood symptoms are considered more serious and require immediate medical attention as they usually indicate that there is bleeding in the stomach, according to the U.S. National Institutes of Health.
Gastritis comes in two forms: acute gastritis and chronic gastritis. In acute gastritis, the patient's symptoms come on suddenly, and in chronic gastritis, the patient's conditions develops slowly, according to the Mayo Clinic. There are many different reasons that gastritis can develop, and the type of gastritis as well as the reason determines healing time. Some causes of gastritis are injury, too much reliance on pain relievers, too much alcohol, stomach infections, medication intolerance, autoimmune disorders, extreme stress and swallowing poisonous substances.