Postnasal drip syndrome, or postnasal drip syndrome, has the potential to cause changes in digestive function, such as bloating, acid reflux, and burping. Postnasal drip syndrome is most commonly seen in chronic sinusitis, chronic rhinitis, deviated septum and other diseases. The onset of the disease will constantly produce more mucus or purulent secretions, and the continuous secretion of inflammatory products and inflammatory factors can flow backward from the nasal cavity into the nasopharynx, and then into the oral cavity and stomach. If a larger amount of secretion enters the stomach, a series of manifestations of indigestion may occur, such as stomach distension and pain as well as burping and acid reflux. Postnasal drip syndrome should be treated promptly, not only for the primary disease, but also for the pharyngeal and gastrointestinal discomforts caused by the disease, so consult your physician for specific advice.