The abdominal pain may be mild & short-lived due to gas, indigestion, or constipation. Severe & pain lasting for more than a few days needs medical attention. The alarm signs indicating severe illness can be mild pain but associated with loss of appetite, recent onset constipation, weight loss, jaundice, weakness, anemia, blood vomiting & blood & mucus in stool. Emergency indications are severe unbearable pain, blood vomiting, distension of the abdomen, significant pain on pressure, tight abdomen & unable to pass stool. Acidity causes a burning sensation, pain in the upper abdomen & chest, along with indigestion & burping. Similar symptoms, along with pain in the back, shoulders, or jaws, may be due to heart disease known as angina but may be confused with acidity.