Most patients with chronic gastritis exhibit atypical clinical symptoms, often presenting as gastrointestinal dyspepsia symptoms, such as upper abdominal bloating, irregular and dull pain, belching, loss of appetite, weight loss, fatigue, and increased upper abdominal discomfort after eating. Patients with chronic gastritis often do not have significant abnormal physical signs; some may only experience mild upper abdominal tenderness or discomfort when pressed. If the gastric mucosa is eroded, occult blood may be positive, but patients presenting with vomiting blood or black stools are rare. Some patients may experience anemia due to long-term loss of appetite or minor bleeding, and severe anemia may present with symptoms related to anemia.