Blocked nose without a cold: what to know

Allergic rhinitis may cause sneezing, an itchy nose and watery discharge, while house dust mite allergy often follows bedroom exposure. Smoke, perfume, cleaning products and dry air can inflame the nasal lining without causing an infection. Chronic sinusitis can bring pressure, reduced smell and thick drainage that persists. Some medicines can contribute to congestion, and repeated use of a decongestant spray may create rebound blockage. A clinician may also consider a deviated septum, nasal polyps or another local cause, particularly when one nostril remains difficult to breathe through.

Notice when symptoms begin and record possible triggers, such as dust, animals, work chemicals or a new medicine. Saline spray can moisturise the nose; use a correctly prepared rinse if you choose irrigation. Avoid smoke and strong scents, and keep indoor air comfortably humid rather than very dry. Ask a pharmacist about suitable allergy medication if you have allergy features. Do not stop a prescribed medicine without advice, and do not continue a nasal decongestant beyond its label directions.

Book a review if symptoms persist, repeatedly disturb sleep, impair smell, or remain one-sided. Seek urgent care for marked breathing difficulty, swelling around the eyes, severe headache with fever, confusion, or heavy bleeding that does not settle. Assessment may include looking inside the nose and reviewing allergies, medicines and related symptoms.

What cause best fits my symptoms and examination? Should I change any nasal products or medicines? Would allergy testing or an ear, nose and throat assessment help?