Posterior nasal drip syndrome, also known as posterior nostril drip syndrome, is a series of symptoms caused by increased secretions from the posterior nostril and chronic inflammation of the mucosa of the nasal cavity and sinuses, resulting in secretions flowing into the throat.
In most cases, the occurrence of posterior nasal drip syndrome is considered to be posterior group sinusitis or nasal secretions that flow backwards from the posterior nostril to the pharynx, causing increased secretions from the pharynx. Due to the increased secretion from the throat, it causes irritation to the throat mucosa, causing discomfort in the throat and is one of the main causes of the chronic cough that is most common in patients. When the postnasal orifice drip is impaired, the ciliary function of the nasal mucosa is impaired, the secretions from the upper airway increase, and when the secretions drip backwards into the pharynx or lower airway, they stimulate the cough receptors there and cause coughing through a nerve reflex. Postnasal drip can also lead to chronic inflammation of the posterior pharyngeal wall and lymphatic follicular hyperplasia. The occurrence of postnasal drip syndrome may also be associated with diseases such as gastroesophageal reflux disease and allergic rhinitis.
For the treatment of postnasal drip syndrome, it is necessary to go to the Department of Otolaryngology for examination to clarify the cause of the disease, and then treat the cause of the disease in order to provide effective treatment.