Heartburn, also known as pyrosis, is a painful, burning sensation in the esophagus. Heartburn results when acidic stomach contents surge upward into the esophagus or when the esophagus undergoes intense spasms. Heartburn usually begins just below the tip of the breastbone, near the heart, and rises toward the throat. In some cases, the mouth suddenly fills with a large amount of clear, watery saliva called water brash. The pain of heartburn may last several hours.
Heartburn accompanies many types of indigestion. It most frequently occurs after a person drinks a hot or cold liquid. People who are tense or tired may suffer from heartburn, especially after eating. Pregnant women and people who have ulcers or gallbladder disease may also experience heartburn. Antacid medications can temporarily relieve heartburn pain.
See also Acid reflux; Indigestion; Ulcer.
