1. Patients with retrosternal obstruction, pause, and pain when eating, and sometimes mild and sometimes severe, may have esophagitis, esophageal diverticulum or early esophageal cancer.

2. Abdominal pain and diarrhea occur after eating inappropriately or after being cold, which may be accompanied by vomiting, chills and fever, which may be acute gastroenteritis and acute dysentery.

3. Stomach pain on one side when walking or running, forced to stop, often relieved after farting or rubbing the abdomen, local or lumpy, when there is no pain, the lump disappears, this may be colon spasm or hepatosplenic flexure syndrome.

4. Full after meals or full all day long, belching but not acid return, poor appetite, gradual weight loss, mild pale or gray complexion, middle-aged and elderly people should think of chronic gastritis, especially chronic atrophic gastritis and gastric prolapse.

5. Upper and mid-abdominal pain after meals, or nausea, vomiting, and food accumulation. The history can be many years, often in the autumn, and the pain may be rhythmic, such as cold, angry, and irritating food, which may be induced by eating irritating food, and may be a gastric ulcer.

2. Often stomach pain begins 0 hours after eating, or wakes up in the middle of the night, eating something can relieve it, and there is often acid reflux. In autumn and winter, pain in the upper abdomen is on the right, often rhythmic, to think of duodenal ulcer or inflammation, diverticulum.

7. Abdominal distension and pain after meals, often nausea, vomiting, occasional hematemesis, recent aggravation of a history of gastric disease in the past, or no history of gastric disease in the past, accompanied by anemia, emaciation, lack of food, and a hard lump on the umbilicus or heart, it is considered gastric cancer.

2. Sudden onset of severe pain in the upper abdomen, there may be a history of unclean diet or cold, restlessness, pale face and cold sweat, cold limbs, hard lumps in the upper and middle abdomen but can not be touched, can be relieved by itself after 0-0 hours, may be stomach cramps. If the stomach is hard and cannot be touched, it may be an acute perforation of ulcer disease.

9. Diarrhea immediately after meals, eating a meal of diarrhea, a slight cold or eating inappropriately will attack, sometimes diarrhea and sometimes constipation, diarrhea is watery, constipation is more mucus, sometimes abdominal distension has the urge to defecate and go to the toilet and no stool, several years have not seen emaciation, then chronic allergic enteritis is likely.