Among these children, those with a history of allergic reaction to CNs and/or pistachios were evaluated for CN allergy in the clinic, but others were not prick tested with CNs routinely. Skin prick test with CN was not applied to all children (n=516) with food allergy. Food allergy diagnosis was based on the combination of clear-cut history, typical clinical presentation, positive skin prick test (SPT)/specific IgE, or oral food challenge (OFC) test ( 7). We assessed the clinical features and course of CN allergy.Ī retrospective chart review was performed on 516 children less than 18 years of age who presented with food allergy over a 24-month period at the pediatric allergy department of a tertiary care children’s hospital. In this study, we present the patients who were sensitized to CNs in a group of children with food allergy attending a pediatric allergy clinic. The majority of children allergic to hen’s egg or cow’s milk often develop tolerance over time, but CN allergy tends to show lifelong persistence similar to other nuts ( 1).Īlthough CN allergy is a serious health problem in children, it remains understudied in comparison to peanuts and needs to be underscored as a potent food allergen. The mainstay of therapy in CN allergy is avoidance of CNs however, this is not easy to provide in patients with CN allergy because it exists in many food products ( 2). Clinical reaction to CNs may be severe, including anaphylaxis, suggesting high potency comparable with other tree nuts and peanuts ( 2, 6). Parallel to the growing trend of CN consumption throughout the previous 10 years all over the world, we suggest that the rate of CN sensitization is also likely to increase in Turkey as reported in the previous studies ( 2).Ĭashew nut allergy presents most commonly in the first five years of life (range, 2 months to 27 years), with typical rapid-onset immunoglobulin E (IgE)-mediated symptoms ( 1, 2). Sunflower seeds are the most commonly consumed snacks, followed by mixed nuts (common constituents of mixed nuts: hazelnuts, pistachios, almonds, walnuts, peanuts, and CNs) in the traditional eating habits of Turkey ( 5). Nuts are frequently consumed as snacks in Turkey. Cashew nut allergy seems to have become a significant problem, not only in these places but also in other regions, because of the increase in consumption over the past years ( 4). The biggest cashew consumers in the world are India, USA, Germany, Netherlands, and the United Kingdom ( 3). In the 2017–2018 season, CN production raised by 32% over the previous decade worldwide. Recent studies on cashew nuts (CNs) suggest that the prevalence of CN allergy is increasing with raising consumption ( 2). While peanuts and tree nuts are not the same, individuals with an allergy to peanuts may have an allergic reaction similar to those with an allergy to tree nuts.Tree nut allergy affects over 2% of children ( 1). Individuals allergic to one tree nut may not necessarily have an allergy to all tree nuts. Tree nuts include almonds, Brazil nuts, cashew nuts, hazelnuts, pecan nuts, pistachios, and walnuts. The proteins found in peanuts differ from those found in tree nuts. IgE activation causes the release of a substance called histamine, which causes an allergic reaction. If someone with a peanut or tree nut allergy eats or comes across products containing peanut or tree nut proteins, their immune system activates the release of too much of the antibody IgE. Peanut allergies in particular can cause a severe, life-threatening response. This panel measures responses to almond, Brazil nut, cashew nut, hazelnut, macadamia nut, peanut, pecan nut, pistachio, and walnut.Ī nut allergy is a common type of food allergy and can cause serious allergic reactions in some people. These antibodies are an immune response to specific peanut and tree nut allergens. The test measures the levels of specific IgE antibodies in your blood. If you have any of these serious symptoms after eating any food, seek medical attention right away. A swollen throat or the sensation of a lump in your throat that makes it difficult to breathe.Constriction and tightening of the airways.This test may NOT be right for you if you have any of these symptoms after eating the allergens in this test: History of a mild allergic reaction to a particular food.Abdominal pain, diarrhea, nausea, or vomiting.Nasal congestion or slight trouble breathing.Itching or swelling of the lips, face, tongue, and throat or other parts of the body.This test may be right for you if you have any of these symptoms: Food allergy symptoms usually develop within a few minutes to a few hours after eating a particular food. How do I know if this test is right for me?Īn allergic reaction to a particular food can range from uncomfortable to severe.
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