Clogged nose due to allergic rhinitis: what to know

Allergic rhinitis can make the nasal lining swell and produce thin mucus. Sneezing, an itchy nose, watery eyes, post-nasal drip and reduced smell may accompany the blockage. Common triggers include pollen, house dust mites, mould and animal dander. Symptoms may follow a seasonal pattern or continue indoors. Persistent blockage can disturb sleep and contribute to mouth breathing; it does not by itself establish a diagnosis of sinusitis or asthma.

Notice where and when symptoms flare, then reduce exposure where practical: keep bedroom fabrics clean, ventilate damp rooms and avoid smoke. Saline nasal rinsing may help clear mucus when done with safe water and clean equipment. A pharmacist or clinician can explain nasal steroid sprays, antihistamines or other options. Nasal sprays need correct direction away from the middle wall of the nose, and decongestant sprays should not be used longer than the product instructions.

Arrange medical advice when blockage is persistent, affects sleep, repeatedly returns or comes with facial pain, reduced smell or thick discharge. Seek urgent care for swelling around an eye, severe headache, vision changes, breathing difficulty or a rapidly worsening allergic reaction. A clinician can check for nasal polyps, sinus disease or another cause and tailor treatment if pharmacy measures have not helped.

Ask which trigger is most likely, how long to try a nasal spray, and whether your other medicines or pregnancy change the choices. Mention snoring, wheezing, eye symptoms and any pattern linked to work, pets or seasons.