Heartburn is a manifestation caused by excessive secretion of acid in the stomach and usually manifests as a burning sensation and a burning pain in the upper abdomen. Heartburn is caused by excessive secretion of stomach acid and manifests itself as a burning sensation or a burning sensation in the stomach, which may be accompanied by abdominal distension, abdominal pain, burping and other discomforts. An unhealthy diet, such as eating spicy and stimulating foods, drinking alcohol, or overeating, can produce strong stimulation to the stomach, leading to excessive secretion of stomach acid and causing heartburn symptoms. Some diseases such as gastroesophageal reflux (GERD), atrophic gastritis, and gastric ulcer can also cause heartburn. If symptoms of heartburn occur, medication should be used under the guidance of a doctor and avoid disposing of it on your own to avoid delaying the condition.