Differential diagnosis

Differential diagnosis of PNDS include cough inducing conditions such as: (1,2)

• allergic rhinitis,
• perennial nonallergic rhinitis
• post-infectious rhinitis
• bacterial sinusitis
• allergic fungal sinusitis
• rhinitis due to anatomic abnormalities
• rhinitis due to physical or chemical irritants
• occupational rhinitis
• rhinitis medicamentosa
• rhinitis of pregnancy
• gastroesophageal reflux disease

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. Parker SM, Smith JA, Birring SS, et al. British Thoracic Society Clinical Statement on chronic cough in adults. Thorax. 2023 Dec 6;78(suppl 6):s3-19.