Aetiology

PNDS can be caused by a number of different conditions which disturbs the normal production of mucus from the nasal and sinus cavities (1,2). These include:

• allergic rhinitis
• enlarged adenoids
• sinusitis/gastroesophageal reflux
• polyps (cystic fibrosis)
• mucociliary dysfunction
• anatomical anomalies
• smoking and exposure to toxins

Reference

1. Pratter M. Chronic upper airway cough syndrome secondary to rhinosinus diseases (previously referred to as postnasal drip syndrome): ACCP evidence-based clinical practice guidelines. Chest. 2006;129(suppl 1):63S-71S.
2. European Respiratory Society. ERS guidelines on the diagnosis and treatment of chronic cough in adults and children. 2020 [internet publication].