Nasal block only at night or both during day and night is cause for concern. Chronic nasal block has systemic effect such as raised blood pressure. Nasal block is curable.

The common causes of nasal block are

• Chronic sinusitis

• Deviated nasal septum

• Turbinate hypertrophy

• Adenoid hypertrophy

• Allergic rhinitis

• Nasal polyposis