aryngeal-pharyngeal reflux (LPR) is related to gastroesophageal reflux (GER). GER is a condition in which the contents of the stomach, instead of moving on through the digestive system, go back into the food pipe.
The contents of the stomach include stomach acids. When these acids make contact with the food pipe, they cause irritation, discomfort, and burning sensations. These sensations – often felt behind the breastbone, in the middle of the trunk – are called heartburn.
Most individuals with GER experience heartburn, but many people with LPR do not.