Gastric ulcers can generally be diagnosed through gastroscopy. They are commonly found in middle-aged and elderly patients, particularly those between the ages of 30-40. Some patients present with abdominal pain, bloating, and general discomfort, while a small number of patients might not experience abdominal pain but present with gastrointestinal bleeding, indicated by black stools or blood in stool. Therefore, if abdominal pain is suspected, it is generally recommended that patients undergo routine blood tests and gastroscopy, among other examinations. The abdominal pain from gastric ulcers usually manifests as upper abdominal pain, occurring in episodic attacks, with chronic and recurrent episodes and a long history of illness. Symptoms typically worsen after eating but may gradually alleviate on their own. Of course, taking some stomach-protecting medication can help manage the condition. A small portion of patients may also experience nausea and belching, which are nonspecific gastrointestinal symptoms. If gastric ulcers are suspected, further screening for Helicobacter pylori is usually conducted. (The use of medication should be under the guidance of a professional doctor.)