Gastroesophageal reflux disease, also known as GERD or gastroesophageal reflux (GRD), results in a number of chronic symptoms due to abnormal gastric reflux to the esophagus.

Gastroesophageal reflus disease is usually caused by some changes in the barrier between the esophagus and the stomach, such as the abnormal relaxation of the sphincter at the bottom of the esophagus, which in the normal state closes the stomach from the top, weak esophageal reflux to the stomach, Barrier, these changes may occur temporarily or permanently.