Laryngopharyngeal (LPR) reflux is the backup of the contents of the stomach into the upper tract of the digestive system, according to WebMD. The symptoms of LPR reflux are similar to many other common types of reflux and can be difficult to diagnose.
WebMD indicates that LPR is caused by an inability of the sphincters in a person's esophagus to properly prevent the acids from exiting the stomach. Inflammation then occurs in parts of the throat that are normally protected from digestive acids. According to Wikipedia, some of the symptoms of LPR reflux are hoarseness of the voice, asthma, sore throat and difficulty swallowing. Cleveland Clinic suggests avoiding spicy or minty foods, avoiding alcohol and managing stress levels as ways to reduce symptoms of LPR reflux.