Mayo Clinic Health Manager
Get free personalized health guidance for you and your family.
Get Started
About our e-newsletters
- Free e-newsletters
- Mayo Clinic expertise
- We do not share your e-mail address
Housecall, our weekly general-interest e-newsletter, keeps you up to date on a wide variety of health topics with timely, reliable, practical information, recipes, blogs, questions and answers with Mayo Clinic experts and more. Our biweekly topic-specific e-newsletters also include blogs, questions and answers with Mayo Clinic experts, and other useful information that will help you manage your health.
Housecall Archives
Mayo Clinic Housecall
Stay up to date on the latest health information.
What you get
- Free weekly e-newsletter
- Mayo Clinic expertise
- Recipes, tools and other helpful information
- We do not share your e-mail address
Causes
By Mayo Clinic staffIn children with asthma, an overly sensitive immune system makes airways become inflamed and swollen when exposed to triggers such as smoke or allergens. Sometimes, asthma symptoms occur with no apparent triggers. When asthma flares up, airway muscles constrict, the lining of the airways swell, and thick mucus fills the bronchial tubes, leading to asthma symptoms.
Asthma triggers differ from child to child and include:
- Viral infections such as the common cold
- Allergens such as dust mites, pet dander, pollen or mold
- Tobacco smoke or other environmental pollutants
- Exercise
- Weather changes or cold air
Conditions linked to asthma include:
- A chronic runny or stuffy nose (rhinitis)
- Inflamed sinuses (sinusitis)
- Heartburn (gastroesophageal reflux disease)
