Asthma

Asthma symptoms such as wheezing, coughing and breathlessness may worsen with allergies. Learn how allergic triggers affect airways and how symptoms can be better managed.

What is asthma?

Asthma is a chronic condition that affects the airways in the lungs. During an asthma attack, the airways become narrowed, making it harder for air to flow in and out of the lungs.

This narrowing is usually reversible with medication. With the right treatment and regular use of prescribed medicines, people with asthma can lead normal, active lives.

There is currently no cure for asthma, but it can usually be well controlled.

What triggers asthma symptoms?

People with asthma have airways that are more sensitive than those of people without asthma. Substances or situations that cause asthma symptoms are known as triggers. These can be non-allergic or allergic.

Non-allergic triggers

  • Colds, flu, and other viral infections
  • Smoke
  • Exercise
  • Cold air or sudden changes in temperature
  • Strong emotions (such as excitement or distress)

Allergic triggers (allergens)

  • House dust mites
  • Pollen
  • Pets
  • Moulds
  • Sulphites in food and drinks

Medications and complementary therapies as triggers

Some medications and natural or complementary therapies can trigger asthma symptoms, including:

Aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs)

Beta-blockers

Echinacea

Royal jelly (can cause life-threatening allergic reactions, including anaphylaxis, in some people with asthma)

Andrographis paniculata (also linked to life-threatening allergic reactions)

Always tell your doctor and pharmacist about all medications and supplements you are taking, including natural or complementary products.

Thunderstorm asthma

Thunderstorm asthma occurs when high levels of rye grass pollen combine with certain types of thunderstorms. During these storms, pollen grains can burst into tiny particles that are carried by strong winds. These particles can travel long distances and penetrate deep into the airways, triggering severe asthma symptoms.

How is asthma diagnosed?

To diagnose asthma, your doctor will:

  • Ask about your symptoms
  • Perform a physical examination (including listening to your chest and examining your nose)
  • Arrange lung function tests (spirometry)
  • Ask about your personal and family history of allergies or allergic conditions
  • Possibly perform skin prick tests and/or blood tests to identify allergic triggers

Managing allergic asthma

Asthma Action Plan

Your doctor should provide you with a written Asthma Action Plan, which outlines daily management and what to do if symptoms worsen.

Medications

  • Relievers (bronchodilators): Fast-acting inhalers that quickly open the airways
  • Preventers: Daily inhaled corticosteroids (ICS), even when symptoms are absent
  • Combination preventers: Contain both an ICS and a bronchodilator
  • Oral corticosteroids: Short courses used during asthma flare-ups
  • Biologic or injectable treatments: For people with uncontrolled asthma despite preventer use

If symptoms remain poorly controlled, speak with your allergy or respiratory specialist.

Allergic rhinitis treatment

Managing allergic rhinitis effectively can improve asthma control. Take all nasal sprays and medications exactly as prescribed.

Correct inhaler and nasal spray technique is essential. Instructional videos and animations are available through national allergy and asthma organisations.

When should I see a specialist?

If you have moderate to severe asthma or allergies, your doctor may refer you to:

  • A clinical immunology/allergy specialist
  • A respiratory specialist

These specialists can provide further testing, diagnosis, and tailored management plans.

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