Laryngopharyngeal reflux (LPR) is similar to another condition -- GERD -- that results from the contents of the stomach backing up (reflux). But the symptoms of LPR are often different than those that are typical of gastroesophageal reflux disease (GERD).
With LPR, you may not have the classic symptoms of GERD, such as a burning sensation in your lower chest (heartburn). That's why it can be difficult to diagnose and why it is sometimes called silent reflux.
The hiatus is an opening in the diaphragm (a muscle separating the abdomen and chest) that the esophagus, or swallowing tube, passes through to reach the stomach. If the hiatus weakens and stretches, part of the stomach can squeeze into the chest cavity, producing a hiatal hernia.
There are two main types of hiatal hernias: sliding and paraesophageal (next to the esophagus).
In a sliding hiatal hernia, the junction where the stomach and the esophagus meets slides up into the chest through...
At either end of your esophagus is a ring of muscle (sphincter). Normally, these sphincters keep the contents of your stomach where they belong -- in your stomach. But with LPR, the sphincters don't work right. Stomach acid backs up into the back of your throat (pharynx) or voice box (larynx), or even into the back of your nasal airway. It can cause inflammation in areas that are not protected against gastric acid exposure.
Silent reflux is common in infants because their sphincters are undeveloped, they have a shorter esophagus, and they lie down much of the time. The cause in adults is not known.
With LPR, adults may have heartburn or a bitter taste or burning sensation in the back of the throat. But they are less likely to have such classic signs of GERD. More often, symptoms in adults are vague and may be easily confused with other problems. The most common symptoms include: