Allergic rhinitis and asthma: one airway, one disease
The nose and the lungs are two ends of the same airway. Up to 8 in 10 people with asthma also have allergic rhinitis — and treating the nose measurably improves the lungs.
The “united airway” in plain language
Your nose warms, humidifies and filters the air you breathe. When allergic inflammation blocks it, you breathe through your mouth instead — sending cold, unfiltered air (and allergens) straight to the lungs. The same allergic reaction that makes your nose sneeze can inflame the lower airways. Doctors call this the united airway or one-airway concept.
Signs the two are linked in you
- Coughing or wheezing that flares in your pollen season
- Night-time cough or chest tightness when your nose is blocked
- Exercise feels harder during allergy season
- A “chest cold” that always follows your allergy flare-ups
Why treating the nose helps the lungs
Research consistently shows that good allergic rhinitis control — especially with intranasal corticosteroids — reduces asthma flare-ups, emergency visits and hospitalisations. This is why international guidelines (ARIA and GINA) recommend that every asthma patient should be checked for allergic rhinitis, and vice versa.
- Treat both, not oneUsing only an asthma inhaler while ignoring the nose leaves half the disease unmanaged.
- Consider immunotherapyFor the right patient, allergen immunotherapy improves both rhinitis and asthma, and may prevent rhinitis from progressing to asthma.
- Watch the seasonsStep up prevention before your pollen season, not during an attack.
- Have an action planKnow your daily control medicines, your reliever, and when to seek help — in writing.
Take breathing symptoms seriously. Wheezing, chest tightness, night cough or breathlessness are not “just hay fever” — see a clinician. Severe breathing difficulty, inability to speak in sentences, or blue lips: emergency care, immediately.
One appointment, two answers. If you have both conditions, ask your clinician to review them together — and mention your rhinitis even if you came for your lungs (or the other way round).