Cause of pain:
Heartburn is caused by acidic fluid from the stomach washing up into the esophagus (the swallowing tube).
Characteristics of pain:
The pain of heartburn is often a burning discomfort directly beneath the breastbone. It is often accompanied by burping, or symptoms of bloating or gas. Sometimes an acid taste occurs in the mouth. Symptoms are often worse after a large meal, or after using tobacco, alcohol, or caffeine. Symptoms tend to improve with antacids.
Evaluation:
The evaluation includes a careful medical history and physical examination, which often point to the diagnosis. The ECG is generally normal. Special swallowing tests are sometimes necessary to make the diagnosis.