What Is Indigestion?

Indigestion, also known as dyspepsia, is a painful or burning feeling in the upper abdomen and is usually accompanied by nausea, bloating or gas, a feeling of fullness, and, sometimes, vomiting. While indigestion may be the result of a disease or an ulcer in the digestive tract, most often it is the result of eating too much, eating too quickly, eating high-fat foods, or eating during stressful situations.