JFarm

Asthma is a chronic condition of the airways or tubes of the lungs. It narrows the airways and make it difficult to breathe. Source Causes The exact cause of asthma is not clear. It may be caused by a combination of factors including environment, genetics, and biology. Asthma symptoms are caused by an increased sensitivity of the airways to certain triggers. The triggers cause the lining of the airways to swell and produce extra fluid called mucus. At the same time the muscles around the outside of the airway tighten in response to the irritation. All of these reactions narrow the airways and make it difficult to breathe. This response is often referred to as an asthma attack. Possible triggers of an asthma attack in a person with asthma include: Viral illness Exercise Cold weather Sinusitis Gastroesophageal reflux disease  (GERD) Sulfites used in dried fruits and wine Medications, such as aspirin , ibuprofen , and beta-blockers Exposure to irritants or allergens...