Blocked nose due to allergic rhinitis

The blockage may alternate between nostrils or become worse around dust, pollen, mould or animals. Sneezing, an itchy nose, clear discharge and watery or itchy eyes support an allergic pattern. Allergic rhinitis can also contribute to cough, sinus symptoms, middle-ear pressure and disturbed sleep. It is different from asthma, although some people experience both conditions. Congestion that is persistent, one-sided, painful or associated with fever may have another explanation.

Limit exposure to triggers when practical: keep dusty fabrics clean, reduce bedroom dust and avoid smoke. A saline rinse can clear irritants; use safe water and clean equipment according to instructions. A pharmacist or clinician can guide you on antihistamines or a steroid nasal spray, including technique and how long to use it. Consistent use may be needed for inflammation, and sprays work best when directed correctly rather than aimed at the middle wall of the nose.

Get urgent help for facial or throat swelling, severe breathing difficulty or wheezing that is rapidly worsening. Arrange a review if symptoms interfere with sleep, work or school, do not respond to appropriate treatment, or cause repeated sinus or ear problems. Seek assessment for nosebleeds that recur or blockage that remains on one side.

Ask which triggers are most likely, whether your eyes or chest symptoms need separate treatment, how to use a nasal spray correctly, and when an allergy referral may help.