Is chronic gastritis contagious? Gastritis, especially chronic gastritis, lacks specific symptoms. Common types of chronic gastritis include chronic superficial gastritis, chronic erosive gastritis, and chronic atrophic gastritis. Diagnosis is mainly made through gastroscopy. Most patients may experience symptoms like upper abdominal pain, loss of appetite, post-meal fullness, acid reflux, and belching, which can be quite apparent, especially in patients with atrophic gastritis, who may have more pronounced symptoms, as well as anemia, weight loss, and diarrhea. Additionally, upper abdominal pain associated with mucosal erosion can be more severe. If the condition is serious, it may also involve bleeding, vomiting blood, or black stools. If there is no Helicobacter pylori infection, gastritis is not contagious and can be cured with proper treatment.