首页>英语角 > 听力 > 美音 > 课 程 > 健康 > 大四>How Allergies and Asthma Are Connected
Hello, I am Dr. C. Andrew Schroeder for About.com. Today we will be speaking about the connection between allergies and asthma.Allergen-mediated asthma is one of the two main types of asthma. Positive allergy testing of your asthma triggers will show evidence that your asthma is directly related to allergies.  Pulmonary function testing usually shows a pattern typical for asthma.Main trigger for asthma symptoms is allergens. Indoor triggers are year-round. Outdoor triggers are seasonal.Other allergic conditions co-exist with asthma and may make it worse. Allergic rhinitis is present in most patients with allergic asthma. Post-nasal drip associated with any form of allergic rhinitis or sinusitis can also worsen asthma symptoms. The Integrated Airway Hypothesis even suggests that the two conditions are one disorder.Controlling allergens means controlling asthma. I hope you have enjoyed our discussion about the connection between allergies and asthma.I'm Dr. C. Andrew Schroeder for About.com. Thanks for watching.
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