Gastroesophageal Reflux

**Definition:** Retrograde flow of gastric juice (GASTRIC ACID) and/or duodenal contents (BILE ACIDS; PANCREATIC JUICE) into the distal ESOPHAGUS, commonly due to incompetence of the LOWER ESOPHAGEAL SPHINCTER.

**Tree numbers:** - C06.405.117.119.500.484

**Synonyms:** - Esophageal Reflux - Gastric Acid Reflux - Gastric Acid Reflux Disease - Gastro-Esophageal Reflux - Gastro-oesophageal Reflux - Gastroesophageal Reflux Disease - GERD - Reflux, Gastroesophageal - Gastro-Esophageal Reflux Disease