asthma symptoms is a condition in which your airways narrow and swell and may produce extra mucus. This can make breathing difficult and trigger coughing, a whistling sound (wheezing) when you breathe out and shortness of breath. For some people, asthma is a minor nuisance.
What are 5 causes?
- Infections like sinusitis, colds, and the flu
- Allergens such as pollens, mold, pet dander, and dust mites
- Irritants like strong odors from perfumes or cleaning solutions
- Air pollution
- Tobacco smoke
- Cold air or changes in the weather, such as temperature or humidity