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A child's allergy is an immune system reaction to a foreign substance, or allergen, that is considered harmless to most. According to Dr. James Fernandez with the Cleveland Clinic Lerner College of Medicine at Case Western Reserve University, "Genetic and environmental factors work together to contribute to the development of allergies."
Pediatric Allergy and Immunology is a peer-reviewed medical journal covering immunology and allergy as they relate to pediatrics. It was established in 1990 and is published eight times per year by John Wiley & Sons. It is the official journal of the European Academy of Allergy and Clinical Immunology. The editor-in-chief is Philippe Eigenmann.
True wheat allergies are very rare; it is estimated to effect 0.1%-2.2% of individuals depending on region. [60] The allergy does not commonly persist into adolescence. Gluten-free foods are safer for wheat allergic patients but they still may theoretically contain wheat's other allergenic proteins. [61]
Allergen immunotherapy, also known as desensitization or hypo-sensitization, is a medical treatment for environmental allergies (such as insect bites) and asthma. [1] [2] Immunotherapy involves exposing people to larger and larger amounts of allergens in an attempt to change the immune system's response.
An allergic reaction can be caused by direct contact with an allergen. For example, through consuming a certain food, inhalation of pollens or dust mites, or direct contact with a certain material. A family history of allergies also leads to a higher risk of developing allergic diseases. [4]
An allergen is an otherwise harmless substance that triggers an allergic reaction in sensitive individuals by stimulating an immune response.. In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity reaction in atopic individuals through immunoglobulin E (IgE) responses. [1]
Allergic inflammation is an important pathophysiological feature of several disabilities or medical conditions including allergic asthma, atopic dermatitis, allergic rhinitis and several ocular allergic diseases. Allergic reactions may generally be divided into two components; the early phase reaction, and the late phase reaction.
Type IV hypersensitivity, in the Gell and Coombs classification of allergic reactions, often called delayed-type hypersensitivity, is a type of hypersensitivity reaction that can take a day or more to develop. [1] Unlike the other types, it is not humoral (not antibody-mediated) but rather is a type of cell-mediated response.