This article focuses on hypersensitivity reactions after inhalation of food particles as primary cause for food allergy. This is an increasingly recognized problem in children. Reactions are commonly diagnosed in children who develop symptoms when the food is ingested. Some children tolerate the food when it is eaten but they experience reactions to airborne food particles such as peanut, cow’s milk, and fish. The exposure can be trivial, as in mere smelling or being in the vicinity of the food. Usually, respiratory manifestations include rhinoconjunctivitis, coughing, wheezing, and asthma, but in some cases even anaphylaxis has been observed. Practical approaches concerning diagnosing clinical reactivity including skin tests, serum IgE antibodies, specific provocation tests, and management have been identified. Studies are warranted to establish the accuracy of diagnostic tests as well as incidence, prevalence, and natural history of food allergy through inhalation route.
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