LYCOS RETRIEVER 
Asthma: Wheezing
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Asthma causes almost 500,000 hospitalizations and about 5,000 deaths annually. Health care costs associated with asthma are estimated at $14.5 billion a year. The number of deaths due to asthma, the number of Americans diagnosed with asthma, and the health care costs of asthma continue to increase each year.
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Prävention von Asthma und Allergien lautet das Motto des ersten Welt-Allergie-Tages am 8. Juli 2005. "Allergien sind die Epidemien des 21. Jahrhunderts, wir müssen das Problembewusstsein überall auf der Welt schärfen", sagte Professor Carlos E. Baena-Cagnani, Präsident der World Allergy Organization (WAO), Ende Juni 2005 beim Welt-Allergiekongress in München. Deshalb wurde der 8. Juli 2005 zum ersten Welt-Allergie-Tag erklärt.
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Asthma is defined simply as reversible airway obstruction. Reversibility occurs either spontaneously or with treatment. The basic measurement is peak flow rates and the following diagnostic criteria are used by the British Thoracic Society:[7]
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Asthma is a chronic, inflammatory disease in which the airways become sensitive to allergens (any substance that triggers an allergic reaction). Several things happen to the airways when a person is exposed to certain triggers:
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Asthma that gets worse at night or in the early hours of the morning indicates a need for additional treatment. Wheezing or a tight chest that is not relieved by several reliever inhalations, particularly if there is difficulty with talking, necessitates urgent medical assistance.
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Asthma causes approximately 5,000 deaths per year. Although most asthmatics who die of the disease are more than 50 years old, rates of asthma death have increased in almost all age groups.
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