Silent reflux is a somewhat confusing term used to describe laryngeal pharyngeal reflux. It is a condition in which stomach acid causes throat discomfort.

The term can be confusing because the condition is not exactly silent. It is marked by hoarseness, frequent throat clearing, and coughing.

The condition is caused by a reflux action, meaning a backward or return flow. In silent reflux, stomach acid flows back into the esophagus and irritates the throat.

It is called “silent” because individuals who have it do not show the typical symptoms associated with acid reflux, such as heartburn.

Silent reflux can develop in infants and adults. It is treatable.

Differences between silent reflux and other reflux conditions

Laryngeal-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.

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