When to worry about loss of smell with allergic rhinitis

Allergic inflammation can swell the nasal lining and block scent molecules from reaching the smell receptors. Congestion, sneezing, itching and watery discharge often rise together. Other causes include infection, nasal polyps, medicines or a head injury, so the pattern matters.

Arrange a routine review if smell does not return as nasal symptoms settle, keeps recurring, or is affecting appetite, safety or quality of life. A clinician can examine the nose and consider whether further assessment is needed.

Notice triggers, congestion and whether taste seems reduced as well. Follow your agreed allergy plan, avoid known triggers where practical, and use nasal treatments exactly as directed. Do not insert objects into the nose or use decongestant sprays for longer than advised.

Take care around smoke, gas and spoiled food while smell is reduced. Tell the clinician about new medicines, recent infections, nasal blockage on one side or any injury to the head.

Seek prompt medical advice for sudden loss after a head injury, one-sided blockage or bleeding, severe facial swelling, high fever, vision changes or a severe headache. Seek urgent help for confusion, weakness or breathing difficulty. Persistent uncomplicated change still merits a routine review.

Ask whether nasal inflammation explains the change, how to use allergy treatment correctly, whether polyps or infection need consideration, and when smell should be reassessed.