Heartburn is the same as a burning sensation. Heartburn refers to a burning-like discomfort or heat sensation behind the sternum or under the raphe, which is closer to the heart, hence the name heartburn. Heartburn may be caused by gastroesophageal reflux disease (GERD), chronic gastritis, peptic ulcer, cholecystitis, etc., or by drinking alcohol or carbonated beverages, which leads to reflux of gastric contents and irritation of the mucosa of the esophagus, resulting in heartburn, which may be accompanied by acid reflux and other symptoms, which are usually more pronounced after an hour of eating, or when bending over or lying down. Heartburn occurs when stomach acid is overproduced and refluxes into the esophagus, stimulating the esophagus. If the mucous membrane of the esophagus is sensitive, or if the spirit is anxious and nervous, even if there is no acid reflux, some people may feel heartburn. When heartburn occurs, after excluding diet and other physiological causes, you should seek medical treatment in time and under the guidance of the doctor for reasonable treatment.