What common reaction can sulfites trigger in individuals with asthma?

Sulfites are food preservatives frequently used in various food products, especially in dried fruits, wines, and some processed foods. In individuals with asthma, sulfites can provoke respiratory reactions, primarily due to their ability to act as allergens or irritants. Particularly, dyspnea, or difficulty breathing, is a common asthma-related symptom triggered by exposure to sulfites.

When sulfites are inhaled or ingested, they can cause bronchoconstriction, leading to airway narrowing and resulting in symptoms such as wheezing, coughing, chest tightness, and, notably, dyspnea. This reaction is more prevalent in individuals with asthma due to their already heightened airway responsiveness.

While food poisoning, nausea, and skin rash may occur as reactions to various substances, they are not specifically attributed to sulfites in the context of asthma. Therefore, dyspnea stands out as the correct answer, representing a direct and recognized impact of sulfite exposure on individuals with asthma.