News tagged with asthma

Related topics: children · allergy · lung function · american journal of respiratory and critical care medicine · new england journal of medicine

New research on preventing fall asthma exacerbations

Experts from Children's Hospital Colorado (Children's Colorado) co-led a team of researchers in studying new approaches to reducing fall asthma exacerbations in pediatric patients. Their findings were released online in late ...

Jan 14, 2016
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Are childhood asthma rates declining?

Childhood asthma has made headlines in recent years because of an upward trend in the number of cases. That may have changed: A government study published in the journal Pediatrics shows asthma rates may be leveling off or ...

Jan 12, 2016
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Childhood asthma may increase risks of shingles

Nearly 1 million incidences of herpes zoster, which is also known as shingles, occur every year in the U.S., with an estimated one-third of all adults affected by age 80. Despite its prevalence, particularly between ages ...

Dec 28, 2015
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Asthma

Asthma is a chronic inflammation of the lungs in which the airways (bronchi) are reversibly narrowed. Asthma affects 7% of the population, and 300 million worldwide. During attacks (exacerbations), the smooth muscle cells in the bronchi constrict, and the airways become inflamed and swollen. Breathing becomes difficult, and asthma causes 4,000 deaths a year in the U.S. Attacks can be prevented by avoiding triggering factors and by drug treatment. Drugs are used for acute attacks, commonly inhaled β2-agonists. In more serious cases, drugs are used for long-term prevention, starting with inhaled corticosteroids, and then long-acting β2-agonists if necessary. Leukotriene antagonists are less effective than corticosteroids but have no side effects. Monoclonal antibodies such as mepolizumab and omalizumab are sometimes effective. Prognosis is good with treatment.

In contrast to chronic obstructive pulmonary disease and chronic bronchitis, the inflammation of asthma is reversible. In contrast to emphysema, asthma affects the bronchi, not the alveoli.

The National Heart, Lung and Blood Institute defines asthma as a common chronic disorder of the airways characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness (bronchospasm), and an underlying inflammation.

Public attention in the developed world has recently focused on asthma because of its rapidly increasing prevalence, affecting up to one in four urban children.

This text uses material from Wikipedia, licensed under CC BY-SA

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