An inappropriate response to sulfites is known as sulfite sensitivity. Chemicals like these are added to foods and drinks to extend their useful life. Beer, wine, and soft beverages may all contain sulfites. Bread, pastries, and crusts such as cookies, crackers, pies, and pizzas. Sulfite sensitivity is extremely rare outside of the asthmatic population. It is estimated that between 1 in 40 and 1 in 100 people with asthma are also sulfite-sensitive. There is not yet a valid sulfite allergy test that can be performed on the blood or the skin. Under the strict supervision of an expert in clinical immunology and allergy, a food challenge can help determine whether or not an individual is allergic to a particular food.
