Chronic gastritis often lacks specific clinical manifestations, and the correlation between the pathological histological examination results of the gastric mucosa and the clinical manifestations is also relatively poor. Some patients show changes in the mucosa indicative of gastritis during gastroscopy, and pathological histological examinations reveal inflammation, but they may have no or only mild clinical symptoms. The clinical manifestations of most chronic gastritis are merely upper gastrointestinal dyspeptic symptoms, such as a sense of fullness in the upper abdomen, irregular dull pain, belching, decreased appetite, weight loss, fatigue, and worsening upper abdominal discomfort after eating. Patients with chronic gastritis often have no obvious specific physical signs; some may have mild upper abdominal tenderness or discomfort upon palpation. Patients with gastric mucosal lesions may have positive fecal occult blood tests; however, vomiting blood or having black stool is very rare, and long-term poor appetite or minor bleeding might be accompanied by anemia. In severe cases of atrophic gastritis and pernicious anemia, significant anemia symptoms may be present.