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" Although a stomachache may simply be the result of eating too much or too quickly, or mixing incompatible foods, it can also signal a more serious problem, from an infection to appendicitis. An abdominal infection (or inflammation of the gastrointestinal tract) causes stomach upset, diarrhea, sudden abdominal cramping, and fever. The only thing your doctor can do is prescribe suppositories to stop the vomiting, and advise that you rest. Food poisoning, such as salmonella, has the same symptoms as a virus, but with a higher fever, says Steven Lamm, M.D., clinical assistant professor of medicine at New York University Medical Center. For relief, doctors recommend antidiarrheal medicine (in moderation) and a diet of bananas, rice, applesauce, and toast. A peptic ulcer will cause pain and indigestion that won&amp;#039;t respond to changes in diet (avoiding chili peppers, for example) or taking antacids. If abdominal pain is intense and occurs under the right rib cage, it&amp;#039;s most likely due to gallstones, says Dr. Jacott. If the gallbladder becomes infected, there may also be fever and nausea. Gallstones can be caused by hereditary factors or a high-fat diet, and are also common after pregnancy. &amp;quot;If you&amp;#039;ve had a baby within the previous year and you&amp;#039;re having pain in the right upper quadrant of the abdomen, figure it&amp;#039;s a gallbladder problem until proven otherwise,&amp;quot; advises Dr. Jacott. You should make an appointment with your primary-care doctor to have it checked out. One potentially serious cause of abdominal pain is an intestinal obstruction. This can be caused by adhesions from prior pelvic or abdominal surgery, appendicitis, or a growth. Along with severe abdominal pain, the symptoms of an obstruction are vomiting, fever, and the inability to have a bowel movement. Appendicitis has some of the same symptoms as an obstruction, but the pain may localize over time to the right lower quadrant of the abdomen. Call the doctor: If you have bloody diarrhea or if you have incessant abdominal pain, diarrhea, and/or vomiting that doesn&amp;#039;t go away after 12 hours. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/health/a16940/explaining-stomach-pain-nov01/>