(HealthDay News) -- You're asthmatic and so is your best friend. But the things that trigger your asthma can be very different.
The U.S. Centers for Disease Control and Prevention says the most common asthma triggers include:
- Tobacco smoke, including secondhand smoke.
- Dust mites.
- Outdoor air pollution.
- Cockroaches and their droppings.
- Pet dander.
- Smoke from burning wood, grass or leaves.
- Infections or illness.
- Hay fever.
- Emotional upset.
- Weather changes.
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