Asthma and allergies are closely linked. Most people with asthma have allergic asthma.

An allergy occurs when your immune system reacts to allergens that do not cause problems for most people. This reaction can affect different parts of your body, triggering: 

  • Asthma which affects your lungs. 
  • Allergic rhinitis (hay fever) which affects your nose and eyes. 
  • Eczema or urticaria (hives) which affects your skin. 
  • Anaphylaxis (the most severe allergic reaction) which can affect your whole body and be life-threatening. 

The most common type of allergy that overlaps with asthma is allergic rhinitis – also known as hay fever.

About 80% of people with asthma also have hay fever. Both create sensitivity in your airways. Asthma creates sensitive lungs, while hay fever is in the nose. Your nose and lungs are connected, so hay fever can trigger your asthma. Treating your hay fever well is one of the best ways to improve your asthma control.

If you have both asthma and hay fever, you will need TWO written plans from your doctor.

Written Asthma Action Plan Allergic Rhinitis Treatment Plan
View Plan View Plan

If your asthma and allergies are seasonal, it is best to start preventative treatment BEFORE the season starts, to keep your lungs and nose calm from the get – go, rather than trying to reclaim control later.

  • Asthma preventers take 2-4 weeks to reach full effect for most people, occasionally up to 12 weeks. Guidelines recommend starting at least 2 weeks before your trigger season if you don’t take them year-round.
  • Allergy nasal sprays (steroid sprays) take a few days to reach their full effect. It takes between 3-36 hours for them to kick in after first dose. Get ready for pollen season by starting them before your allergies start.


Have a question about your asthma? We can help. Call 1800 Asthma (1800 278 462) or book a call today

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