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What Happens During An Asthma Attack?

An attack of asthma can be stimulated by an exposure to an allergen, such as grass, tree, or weed pollen, cockroaches, dust mites, or animal dander. Other common causes are strong odors, such as perfumes, and irritants in the air, such as, chemical fumes or smoke. Certain arduous exercise, strong emotions that alter patterns of normal breathing, and extreme weather conditions may also cause an asthma attack, as can ailments, such as, sinusitis, flu, or even a moderate upper respiratory infection.

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