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An asthma attack is usually mediated by an inflammatory pathway, where a trigger such as an allergen could lead to a series of immune response mediated by various types of immune cells. [ 3 ] Common triggers for asthma include allergens like pet dander, dust mites , pollens and molds .
(It is usually classified as type I hypersensitivity.) [4] [5] In response to exposure to these triggers, the bronchi (large airways) contract into spasm (an "asthma attack"). Inflammation soon follows, leading to a further narrowing of the airways and excessive mucus production, which leads to coughing and other breathing difficulties.
Asthma is one of the most common lung diseases in the world, affecting some 262 million people worldwide and causing more than 450,000 deaths annually, per the World Health Organization.While ...
Other potential triggers include medications such as aspirin and beta blockers. [4] Diagnosis is usually based on the pattern of symptoms, response to therapy over time, and spirometry lung function testing. [5] Asthma is classified according to the frequency of symptoms of forced expiratory volume in one second (FEV 1), and peak expiratory ...
Triggers for asthma attacks vary from person to person, too, although there are several common triggers. ... “Usually, albuterol has an onset of action that is 15 to 20 minutes, and it lasts for ...
The allergy is common [42] [43] and can trigger allergic reactions such as asthma, eczema, or itching. The mite's gut contains potent digestive enzymes (notably peptidase 1) that persist in their feces and are major inducers of allergic reactions such as wheezing. The mite's exoskeleton can also contribute to allergic reactions.
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