Gastroesophageal reflux disease, or gerd, is a digestive disorder that affects the lower esophageal sphincter (les), the ring of muscle between the esophagus and stomachmany people, including. Gastroesophageal reflux disease symptoms reasons. Gastroesophageal reflux disease is a condition in which stomach contents, including acid, back up (reflux) from the stomach into the esophagus and even the throat; the main symptom of gerd is frequent and persistent heartburn, which is pain or a burning sensation in the stomach or upper abdomenother symptoms of gerd include regurgitation of bitter acid up into the throat,.
gastroesophageal reflux disease symptoms reasons
