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Asthma Triggers: Managing Your "Sparks"

Key Information

Sensitive Airways: If you have asthma, your airways are sensitive. Triggers act like “sparks” that can set off symptoms.
Everyone is Different: Your triggers may not be the same as someone else’s.
The Key to Control: Good asthma management means knowing your personal triggers and having a plan to manage them.

Common Triggers and Solutions

1. Colds and Flu
- The Trigger: Respiratory infections are a common cause of flare-ups.
- The Solution: Vaccination is your best protection. Get your free annual flu vaccine and any COVID-19 boosters you are eligible for.
2. Cold Weather
- The Trigger: Cold, dry air can provoke symptoms.
- The Solution: Wrap a scarf loosely over your nose and mouth outdoors to warm the air before it reaches your lungs.
3. Allergies
- The Trigger: Pollen, dust mites, and pet dander are common allergens.
- Pollen: Check daily forecasts during spring and summer.
- Dust: Use allergen-proof bedding and damp-dust regularly to reduce airborne particles.

Identifying Your Sparks

Because everyone’s triggers are different, keeping a symptom diary can help.

Record: Note when symptoms occur and what you were doing or where you were.
Spot Patterns: Over time, patterns may appear (for example, coughing when visiting someone with a cat, or wheezing when running in cold weather).

What Happens Next?

If you are noticing new triggers or feel your current medication is not controlling your symptoms well, please let us know.

Discuss Your Asthma

Further Information

Asthma Diagnosis: Connecting the Dots

Updating Asthma Care: The "2-in-1" Approach

Asthma Attack: Emergency Safety Plans

Winter-Proofing Your Asthma: 3 Steps to Stay Well

For more information about asthma, including symptoms, treatment and living with asthma, please visit the NHS website.

Learn more about asthma

Last reviewed: 01 January 2026
Next review due: 01 January 2029

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