ASTHMA

Causes

It isn't clear why some people get asthma and others don't, but it's probably due to a combination of environmental and inherited (genetic) factors.

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Asthma triggers

Exposure to various irritants and substances that trigger allergies (allergens) can trigger signs and symptoms of asthma. Asthma triggers are different from person to person and can include:

• Airborne allergens, such as pollen, dust mites, mold spores, pet dander or particles of cockroach waste

• Respiratory infections, such as the common cold

• Physical activity

• Cold air

• Air pollutants and irritants, such as smoke

• Certain medications, including beta blockers, aspirin, and nonsteroidal anti-inflammatory drugs, such as ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve)

• Strong emotions and stress

• Sulfites and preservatives added to some types of foods and beverages, including shrimp, dried fruit, processed potatoes, beer and wine

• Gastroesophageal reflux disease (GERD), a condition in which stomach acids back up into your throat.