What causes burning sensation in esophagus?

Most cases of esophageal burning sensation are caused by acid or food reflux into the esophagus, stimulating the esophageal mucosa, which is a typical symptom of reflux esophagitis. The reflux defense mechanism of the esophagus itself is weakened, such as relaxation of the lower esophageal sphincter, esophageal dyskinesia and mechanical damage caused by various reasons, which can cause the invasion of acidic gastric juice and produce burning sensation. These symptoms can be exacerbated by eating greasy, irritating foods, lying flat, bending over, and increased abdominal pressure.