Drug-induced esophagitis
Under normal circumstances, when taking medicine orally, the medicine quickly passes through the esophagus from the mouth to the stomach and rarely causes adverse reactions in the esophagus. However, if there is an abnormality in the esophagus itself, such as compression, stenosis, motility disorder, gastroesophageal reflux, etc., as well as improper medication methods, such as taking medicine in a supine position or drinking too little water when taking medicine, the drug retention time in the esophagus is prolonged. Some drugs can cause esophageal damage. This esophageal mucosal damage caused by drugs is called drug-induced esophagitis.