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What Causes Asthma?

Posted Oct 05 2011 1:36am

When looking at what causes , the conditions that cause a person to develop asthma and the triggers that cause asthma symptoms must be considered. The development of asthma symptoms occurs when a person has both the primary cause of asthma and irritants triggering the symptoms.

A genetic tendency for the immune system to overreact to allergens is called atopy. This hereditary hypersensitivity of the immune system is considered the primary cause of asthma in most cases. Atopy has been linked to allergies and eczema as well as asthma, so people with asthma may have a family history of any of these conditions.

Certain chemical substances and some respiratory infections in childhood have been identified as alternative causes of asthma. These alternative primary causes can make someone reacts to asthma triggers with asthma symptoms even if they do not have the genetic predisposition to asthma.

For people with asthma, asthma triggers are the substances or conditions that cause them to develop asthma symptoms. Asthma triggers invoke the immune system response which causes inflammation of the lining of the airways, mucus accumulation in the airways, and the tightening of the muscles around the airways known as bronchospasms.

Exposure to allergens in the air is a common asthma trigger. Common allergens that trigger asthma symptoms are mold, pet dander, pollen, and dust mites.

Some people experience asthma symptoms only when they exercise. Exercise-induced asthma may be caused by breathing through the mouth. Exercise causes the air to be inhaled more quickly and the air to be cooler since it is not warmth by these passages. People with exercise-induced asthma may need to use an inhaler before or during exercise.

People may develop asthma symptoms in response to significant or strong emotions. An emotional response can cause changes in breathing and airway constriction naturally which can trigger asthma symptoms.

Respiratory illnesses can be asthma triggers since they can cause inflammation or irritation of the airways and the accumulation of mucus. More asthma controlling medication than usual may be needed when the person has the flu, colds, sinus infections, or other respiratory illnesses. We are all living with allerigies of some sort, as research shown 1 in 3 person have an allergy. Do you know or ? Find out more on our site.


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