Laryngopharyngeal reflux (LPR), otherwise known as silent reflux, is a form of acid reflux. The esophagus (food tube) has special rings of muscle (sphincters) at the top and the bottom.

Gastroesophageal reflux disease (GERD) and laryngopharyngeal reflux (LPR) both affect the esophagus (food tube) but in different ways. GERD affects the lower sphincter (muscular ring) in the ...