1. If there is obstruction, pause and pain at the back of the sternum when eating, which may be mild or severe, there may be esophagitis, esophageal diverticulum or early esophageal cancer.
2. If the patient has fullness after meals or is full all day long, belching but not acid reflux, poor appetite, gradual weight loss, and mild pallor or grayish color, the middle-aged and old people should think of chronic gastritis, especially chronic atrophic gastritis and gastroptosis.
3. Upper and middle abdominal pain after meals, or nausea, vomiting, feeling of food accumulation. The history of the disease can be many years, often in the fall attack, the pain may have rhythmic, such as cold, angry, eat irritating food can be triggered, may be gastric ulcer.
4. Often in the meal 2 hours after the beginning of stomach pain, or wake up in the middle of the night pain, eat something can be relieved, often acid reflux phenomenon. In the fall and winter prone, pain in the epigastric right, often rhythmic, to think of duodenal ulcer or inflammation, diverticulum.
5. Abdominal distension and pain after meals, often with nausea, vomiting, occasionally vomiting blood, recently aggravated by past history of gastric disease, or recently occurring without past history of gastric disease, accompanied by anemia, emaciation, lack of appetite, and hard lumps felt at umbilicus or heart, are to be considered as gastric cancer.
6. Sudden onset of severe pain in epigastrium, possibly with history of unclean diet or cold, fidgety, pale and cold sweat, cold limbs, hard lumps in epigastrium and middle abdomen which cannot be touched and can be relieved after 1-2 hours, may be stomach cramps. Those with hard stomach plates that cannot be touched may have acute perforation of ulcer disease.
7. Walking or running on one side of the stomach pain, forced to stop, often in the farting or rubbing the abdomen after relief, localized or lump, no pain when the lump disappeared, this may be the colon spasm or liver-spleen curvature syndrome.
8. Eating inadvertently or after a cold occurrence of abdominal pain, diarrhea, can be accompanied by vomiting, chills and fever, may be acute gastroenteritis, acute dysentery.
9. Diarrhea immediately after meals, eat a meal, eat a diarrhea, a little cold or eat something inadvertent onset, sometimes diarrhea and sometimes constipation, diarrhea is watery, constipation, mucus is more, and sometimes abdominal distension and intention to go to the toilet and no stools, a few years and did not see the possibility of wasting, the chronic allergic enteritis.
10. Hidden pain or distending pain in the abdomen, mostly on the left side, may have constipation in the past, but often have abdominal pain recently, and often have mucus and pus and blood in the stool; or have normal stools in the past, but often have diarrhea now, and lose weight obviously, and have a pale face, then we should think about the possibility of rectal or colorectal cancer.