Gastritis is an inflammation of the stomach that occurs in one of two forms: acute or chronic. Acute gastritis has a sudden onset with little to no previous symptoms. Chronic gastritis produces symptoms that have lasted over time. Both forms can cause similar symptoms, or there may be no symptoms. Both forms of gastritis are treatable; however, the length of time that the gastritis lasts, depends on whether or not it is detected and treated and what the symptoms are.
Acute gastritis symptoms are often more severe than those of chronic gastritis, prompting people suffering from the symptoms to seek medical care quickly in most cases. Because of this, acute gastritis does not last as long as chronic gastritis. Once treatment for acute gastritis begins, the gastritis generally lasts between two to ten days. If vomiting is present it will usually be gone within 48 hours of treatment. Other symptoms, such as nausea, abdominal cramps and headaches, usually improve within four to five days. If complications have occurred and caused dehydration, recovery may need to take place in a hospital and will likely take an additional week.
Because chronic gastritis is more likely to have mild or no symptoms, it may be weeks, months or even years before it is even detected. Once it is detected, if it is caused by an infection of H. pylori bacteria, the bacterial infection must be treated along with the inflammation. Typically, bacterial infections of this type take between 10-14 days for treatment to be complete. The other symptoms of gastritis, if any, will begin to improve as treatment to reduce the amount of acid in the stomach progresses. As with acute gastritis, it usually takes between two to ten days for symptoms to alleviate and the gastritis to heal once treatment begins.