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IN THIS GUIDE
What Is Asthma? Symptoms of Asthma › Asthma Attack › Causes of Asthma › Triggers of Asthma › Diagnosis › Treatment and Action Plan › Managing Asthma › Asthma in Children › When to Seek Help › Frequently Asked Questions ›
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Causes of Asthma:
What Triggers Asthma Symptoms?

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Asthma can develop due to a combination of factors. Understanding the causes and triggers can help you manage symptoms better and prevent asthma attacks.

Common Causes of Asthma

Asthma is usually caused by a combination of genetic and environmental factors that lead to inflammation and narrowing of the airways.

Allergens

Pollen, dust mites, mold, pet dander, and cockroach droppings can trigger asthma symptoms.

Respiratory Infections

Colds, flu, and other respiratory infections can trigger or worsen asthma.

Environmental Factors

Air pollution, smoke, strong odors, and chemical fumes can irritate airways.

Physical Activity

Exercise can trigger symptoms in some people, especially in cold or dry air.

Smoking

Tobacco smoke can irritate airways and increase the risk of asthma.

Genetics

A family history of asthma or allergies can increase your risk.

Medications

Certain medicines, including aspirin and NSAIDs, may trigger symptoms in some people.

Stress & Emotions

Stress and strong emotions can trigger or worsen asthma symptoms.

How Triggers Affect Your Airways

When you are exposed to a trigger, your airways can become inflamed and narrow. Extra mucus may be produced, making it harder for air to flow in and out of your lungs.

Understanding Asthma Triggers

Asthma triggers can cause your airways to become inflamed or narrowed, leading to coughing, wheezing, shortness of breath, or other asthma symptoms.

Learn how asthma triggers affect your airways

Common Asthma Triggers

  • Allergens (pollen, dust, mold, pet dander)
  • Respiratory infections (colds, flu)
  • Smoke, strong odors, or air pollution
  • Exercise or physical activity
  • Cold air or weather changes
  • Stress or strong emotions
  • Certain medicines
Everyone's Triggers Are Different

Asthma triggers can vary from person to person. Something that causes symptoms for one person may not affect another. Identifying your personal triggers can help you take steps to reduce exposure and better manage your asthma.

Talk with your healthcare professional about your specific triggers.

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