Stomach Acid, Heartburn and Indigestion Pain

Pain and Causes of Many Gastrointestinal Disorders Gastrointestinal disorders are varied and they include indigestion, heartburn and upset stomach. Heartburn is caused when the acid in the stomach rising up the esophagus. A visit to the doctor will provide you with a professional diagnosis. Symptoms of stomach acid, heartburn and indigestion include upset stomach, burning [...]