Blocked nose at night: what should you know?

Lying down can make mucus drain less easily and can make swollen nasal tissue feel more noticeable. Bedroom triggers such as dust, dust mites, mould, fragrance, or an air conditioner may irritate the nose. Allergic rhinitis often causes congestion with sneezing, itching, or watery discharge; house dust mite allergy may be worse in bedding. Sinusitis can add facial pressure, reduced smell, or thicker drainage. A blocked nose can also contribute to mouth breathing and disturbed sleep. These patterns point toward possible causes, but the symptom alone does not identify one condition.

Keep the bedroom free of smoke and strong scents, wash bedding regularly, and reduce visible dust. Saline spray or a gentle saline rinse can loosen mucus; use safe water for any rinse and follow the product directions. Raising the head of the bed slightly may make breathing more comfortable. If symptoms follow a clear allergy pattern, ask a pharmacist or clinician whether allergy medication is suitable. Avoid using decongestant nasal sprays longer than the label allows, because overuse can worsen congestion.

Arrange an assessment if blockage keeps returning, affects sleep, lasts beyond a short-lived illness, or is mainly on one side. Seek urgent help for severe breathing difficulty, swelling around the eyes, confusion, a severe headache, or a high fever with marked illness. Tell a clinician if you snore loudly, gasp during sleep, or feel unusually sleepy in the daytime, as these can occur with obstructive sleep apnoea.

Ask whether your symptoms fit allergic rhinitis, sinusitis, or another nasal problem; whether examination of the nose is needed; and which spray or medicine is appropriate with your other conditions. Bring a note of triggers, sleep disruption, discharge, facial pain, and how long the pattern has continued.