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. Reflux vs disease. Gerd vs lpr – overview gastroesophageal reflux disease (gerd) gerd is the most common problem with people who have reflux problems when people eat/drink the valve above the stomach also know as the lower esophageal sphincter (les) relaxes and remains open then the acid from the stomach will reflux and come up and enter the esophagus.
reflux vs disease