Laryngopharyngeal reflux (LPR), also known as silent reflux, is acid reflux that does not cause heartburn or indigestion.

Because these typical symptoms of gastroesophageal reflux disease (GERD) are absent or “quiet,” so to speak, many people do not notice that they are suffering from reflux. Often overlooked or misdiagnosed, Silent Reflux affects millions of people every year and all of them are at increased risk of cancer if they leave the disease untreated.

What is the difference between Silent Reflux and GERD?

The food passage runs through the esophagus. At both ends of the esophagus there is a muscle ring called the sphincter muscle (esophagus). Normally, these sphincter muscles hold the stomach contents (including food and acid, which helps digestion) in the stomach.
In gastroesophageal reflux disease (GERD), the lower sphincter muscle does not function properly. This allows stomach acid to flow back into the esophagus and cause the typical heartburn symptoms. But the healthy functioning upper sphincter does not allow the reflux to get into the throat. With LPR or silent reflux, none of the sphincter muscles work properly and the reflux of stomach acid and digestive enzymes (pepsins) can destroy the esophagus as well as the ears, nose, throat, vocal cords, sinuses, mouth and lungs.

The risks of backflow

Gastric acid (gaseous or liquid) that accumulates in the throat and larynx can cause irritation and damage with serious problems in the long term without treatment. In adults, Stiller Reflux can bruise the neck and vocal cords and increase the risk of cancer in the region. The lungs can also be affected and aggravate existing diseases such as bronchitis, asthma or emphysema.