About triggers

Understanding your asthma triggers is an important part of managing your condition. Even if a trigger doesn’t always cause symptoms or require changes to your treatment, tracking what affects you today can help reveal patterns over time.

By noting your triggers, you and your care team can:

  • Spot what tends to make your symptoms worse
  • Avoid or prepare for situations that might lead to flare-ups
  • Make more informed treatment decisions
  • Take better control of your asthma in the long run

You don’t need to worry about getting it “right” — this isn’t a test. It’s simply about what you think may have affected your breathing today.

Why we ask about today

Each day is different. What you record today helps you reflect on what’s affecting your asthma now — not just in general. You might notice trends like, “I usually get symptoms after being outside on high-pollen days,” or “Cold mornings tend to trigger my cough.”

This daily check-in gives you and your care team a clearer picture — without needing to remember everything later.

What the triggers mean

Here’s a quick explanation of each trigger:

Pollen

Tree, grass, or weed pollen in the air can affect people with seasonal allergies or hay fever.

Pets

Pet dander (tiny flakes of skin), fur, or saliva can trigger symptoms — even from animals you’re around often.

Activity

Exercise or physical exertion can sometimes bring on asthma symptoms, especially if your airways are already sensitive that day. This is sometimes called exercise-induced asthma.

Dust and mites

Dust in the home or workplace — and the microscopic mites that live in it — can irritate your airways.

Cold/Illness

Having a cold or virus — like a sore throat, runny nose, or cough — can make asthma symptoms worse or harder to manage. Even mild infections can cause flare-ups in some people.

Air Quality

Pollution, smog, or wildfire smoke can make breathing harder and worsen asthma symptoms.

Smoke/scents

Cigarette smoke, perfumes, scented candles, or strong cleaning products can irritate sensitive airways.

Weather

Changes in weather — such as wind, heat, humidity, or storms — can sometimes act as a trigger.

Stress

Emotional stress or anxiety doesn’t cause asthma, but it can make symptoms feel more intense.

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