Asthma is a condition that affects your lungs and makes it hard to breathe. It happens when the airways in your lungs get swollen and narrow, often because of triggers like dust, pollen, cold air, or exercise.
Causes and Triggers
Asthma can be caused or made worse by things like:
- Allergies (like pollen, pet dander, or mold)
- Cold air or changes in weather
- Smoke or strong smells
- Exercise
- Stress or strong emotions
Symptoms
People with asthma may feel:
- Shortness of breath
- Coughing, especially at night or early morning
- Wheezing (a whistling sound when breathing)
- Chest tightness