Laryngopharyngeal reflux

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Laryngopharyngeal reflux (LPR) or laryngopharyngeal reflux disease (LPRD) is the retrograde flow of gastric contents into the larynx, oropharynx and/or the nasopharynx. LPR causes respiratory symptoms such as cough and wheezing and is often associated with head and neck complaints such as dysphonia, globus pharyngeus, and dysphagia. LPR may play a role in other diseases, such as sinusitis, otitis media, and rhinitis, and can be a comorbidity of asthma. While LPR is commonly used interchangeably with gastroesophageal reflux disease (GERD), it presents with a different pathophysiology. LPR reportedly affects approximately 10% of the U.S. population. However, LPR occurs in as many as 50% of individuals with voice disorders. It may also correlate with the ability to voluntarily burp (supragastric belching).

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