Indigestion is discomfort or a burning sensation in the upper abdomen. It may be accompanied by a wide variety of symptoms, such as bloating or nausea. Indigestion is also called dyspepsia.

Indigestion may be caused by numerous factors, including eating too fast or too much, medications such as nonsteroidal anti-inflammatory drugs, or medical conditions such as gastritis and pregnancy. Some people experience chronic indigestion that is not caused by these factors. This type of indigestion is called functional or non-ulcer dyspepsia.

Indigestion is often confused with heartburn, a burning sensation in the chest. However, they are different symptoms that may indicate different disorders.

About 25 percent of the population experiences indigestion at least once a year, according to the American Academy of Family Physicians.

There are a number of prevention methods for indigestion, including avoiding foods that cause indigestion and limiting stress. Some common medications used to treat indigestion include antacids, proton pump inhibitors and prokinetics.