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 consonant and 2,000 Hz. 1. The symbol is commonly used to represent the dental nasal as well, rather than , as it is rarely distinguished from the alveolar nasal. Examples of languages containing nasal occlusives: The voiced retroflex nasal is is a common sound in Languages of India. The voiced palatal nasal is a common sound in European languages, such as: Spanish , French and Italian , Catalan and Hungarian , Czech and Slovak , Polish , Occitan and Portuguese , and (before a vowel) Modern Greek . Many Germanic languages, including German, Dutch, English and Swedish, as well as varieties