What Are the Causes of Asthma?

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Causes

The exact cause of asthma is unknown. But it may have connection with a combination of environmental and genetic factors. These possible triggers of asthma include:
  • Infections such as sinusitis, colds, and flu
  • Allergens such as pollens, mold spores, pet dander, and dust mites
  • Irritants such as strong odors from perfumes or cleaning solutions, and air pollution
  • Tobacco smoke
  • Exercise (known as exercise-induced asthma)
  • Weather; changes in temperature and/or humidity, cold air
  • Strong emotions such as anxiety, laughter or crying, stress
  • Medications, such as aspirin-sensitive asthma
Keywords: asthma causes; asthma cause; causes asthma.    
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