DEFINITION (ASTHMA) Asthma is a condition in which your airways narrow and swell and produce extra mucus. This can make breathing difficult and trigger coughing, wheezing and shortness of breath. For some people, asthma is a minor nuisance. For others, it can be a major problem that interferes with daily activities and may lead to a life-threatening asthma attack. Asthma can't be cured, but its symptoms can be controlled. Because asthma often changes over time, it's important that you work with your doctor to track your signs and symptoms and adjust treatment as SYMPTOMS Asthma symptoms range from minor to severe and vary from person to person. You may have infrequent asthma attacks, have symptoms only at certain times — such as when exercising — or have symptoms all the time. Asthma signs and symptoms include: Shortness of breath Chest tightness or pain Trouble sleeping caused by shortness of breath, coughing or wheezing A whistling or wheezing sound when exhaling (wheezing is a common sign of asthma in children) Coughing or wheezing attacks that are worsened by a respiratory virus. 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 genetic (inherited) factors. Asthma triggers Exposure to various substances that trigger allergies (allergens) and irritants can trigger signs and symptoms of asthma. Asthma triggers are different from person to person and can include: Airborne allergens, such as pollen, animal dander, mold, cockroaches and dust mites Respiratory infections, such as the common cold Physical activity (exercise-induced asthma) Cold air Air pollutants and irritants, such as smoke Certain medications, including beta blockers, aspirin, ibuprofen (Advil, Motrin IB, others) and naproxen (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
