Which of the following is a common asthma trigger?

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Multiple Choice

Which of the following is a common asthma trigger?

Allergic asthma often flares when the immune system reacts to proteins carried in the air. Proteins from animal dander—tiny flakes of skin shed by pets with fur or feathers—are a common indoor trigger. In people who are sensitized, inhaling these proteins sets off an IgE-mediated response that inflames the airways and causes bronchoconstriction, leading to wheeze, coughing, and tightness. Because many homes have pets, animal dander is one of the most frequent triggers people encounter indoors, making it a common cause of asthma symptoms. Reducing exposure—like keeping pets out of the bedroom, using high-efficiency filters, and regular cleaning—can help lessen these reactions.

Allergic asthma often flares when the immune system reacts to proteins carried in the air. Proteins from animal dander—tiny flakes of skin shed by pets with fur or feathers—are a common indoor trigger. In people who are sensitized, inhaling these proteins sets off an IgE-mediated response that inflames the airways and causes bronchoconstriction, leading to wheeze, coughing, and tightness. Because many homes have pets, animal dander is one of the most frequent triggers people encounter indoors, making it a common cause of asthma symptoms. Reducing exposure—like keeping pets out of the bedroom, using high-efficiency filters, and regular cleaning—can help lessen these reactions.

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