Post-nasal drip Post-nasal drip Post-nasal drip (PND, also termed upper airway cough syndrome, UACS, or post nasal drip syndrome, PNDS) occurs when excessive mucus is produced by the nasal mucosa. The excess mucus accumulates in the back of the nose and eventually the throat once it drips down the back of the throat. It is caused by rhinitis, sinusitis, gastroesophageal reflux disease (GERD), or by a disorder of swallowing (such as an esophageal motility disorder). But also further sources such as an allergy, cold or flu and as a result of medications. However, researchers argue that the flow of mucus down the
Nasal irrigation Nasal irrigation Nasal irrigation, (also called nasal lavage or nasal douche) is a personal hygiene practice in which the nasal cavity is washed to flush out mucus and debris from the nose and sinuses. The practice is reported to be beneficial with only minor side effects. Nasal irrigation can also refer to the use of saline nasal spray or nebulizers to moisten the mucous membranes. Nasal irrigation can be an effective therapy to relieve symptoms of both chronic sinusitis as well as acute sinuitis caused by upper respiratory tract infections such as the common cold. The evidence for use in