The red, inflamed lining of the stomach is known as erythematous mucosa. When a patient is diagnosed with gastritis, the inflamed stomach lining is seen during an endoscopic examination. Endoscopy may or may not include biopsies to evaluate and diagnose the origin of the erythema.
Nonsteroidal anti-inflammatory medicines, bile reflux, alcohol, and bacterial infections like Helicobacter pylori are all common causes of stomach gastritis. Certain disorders, such as sarcoidosis and allergies, can induce erythematous changes in the stomach. Erythema of the stomach lining can also be caused by radiation treatments.
Gastritis symptoms may or may not be present in a person. Some symptoms are minor, such as moderate belly discomfort or heartburn after eating, while others are more significant. Gastritis can cause weight loss, vomiting, and hematemesis, among other things.
Acute gastritis is a short-term inflammatory condition. Chronic gastritis, on the other hand, can cause muscular atrophy and even cellular abnormalities in the stomach mucosa, which can lead to stomach cancer.
Stomach cancer is thought to develop in stages, starting with an H. pylori infection and proceeding via chronic gastritis, atrophy, metaplasia, and eventually dysplasia, or cancer cell formation.