Prevalence and clinical features of adverse food reactions in Portuguese children

Jorge, Arminda; Soares, Elisa; Sarinho, Emanuel; Lorente, F.; Gama, Jorge; Taborda-Barata, Luís

doi:10.1186/s13223-017-0212-y

Cited by 13 publications

(9 citation statements)

References 26 publications

(39 reference statements)

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“…A few fruit allergens have similarities to pollens and grass. 12 Fruit allergens have thermolability which can also result in absent clinical manifestation.1 8 We found a very low degree of agreement and lack of statistical significance between parental reports and skin prick test results for fruit. Generally, parental reports tend to incorrectly deduce the cause of allergies.…”

Section: Discussionmentioning

confidence: 80%

“…However, parents tend to incorrectly deduce the probable food causing the allergy manifestation. 12 According to Alergologica in 2015, fruits and nuts are the most common food causing allergies in patients aged >5 years. 6 This allergy is common in children and adults.…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, a study of 78 reports of allergies, only 28 showed positive results by skin prick test. 12 It is difficult to identify fruit allergies as fruit is often mixed in consumption with other substances. 17 Seafood is one of eight most common allergens due to IgE-mediated allergy and is a common cause of food allergy anaphylaxis.…”

Section: Discussionmentioning

confidence: 99%

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Food allergies in children: a comparison of parental reports and skin prick test results

Savitri

Lubis

Soegiarto

2018

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Background Food allergy is common in children and its prevalence is generally on the rise. Imprecise parental reports about reactions to particular foods can lead to unnecessary restrictions. Since children have specific growth requirements, such nutritional restrictions may have disturbing effects on children’s growth and development.Objective To compare parental reports on food reactions to skin prick test results in their children.Method Retrospective, cross sectional study using patient’s medical record data during one-year study period. Data were analyzed manually and statistically, to assess the degree of agreement (Kappa’s coefficient) and significance (P).Results We collected data from 154 subjects aged 0-18 years. For every allergen assessed, parents reported more food reactions than positive skin prick test results. Allergy incidence were caused, in order, by cow’s milk and chicken (25.3%), eggs (22.1%), chocolate (20.1%), fruits (14.3%), seafood (13%), and saltwater fish (1.9%). Kappa coefficient are all poor (<0.2) and P value are all >0.05 except for chicken (P=0.02).Conclusion Most parents tend to overestimate which food cause reactions in their children, as reactions reported were not necessarily allergenic. Therefore, every patient experiencing allergy reactions should undergo skin prick testing to confirm the possibility of allergy.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

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Food allergies in children: a comparison of parental reports and skin prick test results

Savitri

Lubis

Soegiarto

2018

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“…A lower prevalence of food hypersensitivity has been reported in Southern European countries, as well as in Turkey. This may be due to genetic, cultural, or dietary factors, as well as public awareness [ 13 , 14 ]. Evidence shows that the percentage of the adverse food reactions, which are diagnosed by a double-blind placebo-controlled food challenge, is up to 15 times lower.…”

Section: Discussionmentioning

confidence: 99%

Food intolerances in children and adolescents in Switzerland

et al. 2022

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Adverse food reactions have become an important health concern in pediatrics. There are discrepancies between diagnosed and self-reported food allergies and intolerances, leading to food avoidance with possible psychological and nutritional implications in the latter. There is no data available so far on the number of children and adolescents, who reduce or completely avoid certain foods in their diet. The aim of this study was to determine the prevalence of children and adolescents in the Northwest of Switzerland, who omit foods from their diet because of a self-reported intolerance, as well as the prevalence of children and adolescents who eliminate well-tolerated foods for presumed health reasons. This is a cross-sectional study conducted in the Children’s hospitals of Aarau and Basel (Switzerland) and in 4 pediatric private practices. A total of 2036 children and adolescents (54% male and 46% female) between 1 month and 18 years (mean age: 7.4 years) were included, of which 316 (16%) participants reported to avoid foods due to intolerance. Lactose intolerance is the most frequent one. In 55% of all cases, no medical tests had been performed to confirm such an intolerance. Avoiding tolerated foods for presumed health reasons was stated by 251 (12%) participants. Conclusions: Clinicians should be aware of the high frequency of food avoidance in the pediatric population due to true intolerance, functional diseases, or due to lifestyle reasons. Milk is the most avoided food and half of the affected patients avoid foods without guidance by professional dieticians, therefore risking possible negative impacts on their physical and mental health. Pediatricians should perform further investigations or advise nutritional guidance if an avoidance of foods or specific diets occurs. What is Known:• The prevalence of food intolerances in children and adolescents is unknown.• Eating behavior in children is influenced by the consumption of social media. What is New:• Based on this large cross-sectional study, it was shown that 16% of children and adolescents avoid foods, half of them without any medical advice.• Food avoidance is common among this Swiss cohort of children because of different reasons: lifestyle habits, functional diseases, true intolerances with possible consequences such as micronutrient deficiencies if not properly monitored.

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“…Various meta-analyses have estimated the prevalence of food allergies to any food in schoolchildren to be between 7% and 40% when only self-reported values are analysed, 9 , 12 , 13 , 14 , 15 and between 1% and 3% when studies include diagnostic tests. 14 , 15 , 16 , 17 , 18 As far as we know, besides a single study in children attending an allergy outpatient clinic, 19 the only actual population-based studies on the prevalence of food allergies carried out in Portugal were performed by our group in children 20 and adults, 21 but no studies in adolescents have been published. Thus, the objective of our study was to determine the prevalence of both self-reported and probable food allergy, as well as to analyse the clinical features, involved foods, and associated factors in a general population of Portuguese adolescents.…”

Section: Introductionmentioning

confidence: 99%

Prevalence and clinical features of adverse food reactions in Portuguese adolescents

Lozoya

Rodrigues

Fernandes

et al. 2020

World Allergy Organization Journal

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Background & aims The objective of the present study was to determine, for the first time, the prevalence and clinical features of food allergy in Portuguese adolescents. Methods Cross-sectional study performed in various secondary schools in central Portugal. Randomly selected adolescents replied to a validated food allergy questionnaire. Those who reported an adverse food reaction were seen at participating hospitals, where clinical history was taken, skin prick (SPT) and prick-prick skin (SPPT) tests were performed, and food allergen-specific IgE levels (sIgE) were determined. An open oral challenge was performed in selected cases. Cases of positive clinical history of immediate (up to 2 h after ingestion) reaction in association with positive food sIgE levels and/or SPT were classified as IgE-associated probable food allergy and as confirmed IgE-mediated food allergy if food challenges were positive. Cases of positive clinical history of delayed (more than 2 h after ingestion) and negative food sIgE levels independently of positive SPT or SPPT results, were classified as non-IgE associated probable food allergy. Results The prevalence of probable food allergy in Portuguese adolescents was 1.41% (95% CI: 0.90–2.03%), with fresh fruits, shellfish, nuts, and peanut as the most frequently implicated foods. IgE-mediated probable food allergy occurred in 1.23% (95% CI: 0.67–1.72%) of cases, with fresh fruits, shellfish, and nuts mainly involved. Cutaneous symptoms were most frequently reported. Conclusions The prevalence of probable food allergies in Portuguese adolescents is low, is mostly related to fresh fruits, shellfish, nuts, and peanut, and most frequently involves cutaneous symptoms.

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Prevalence and clinical features of adverse food reactions in Portuguese children

Cited by 13 publications

References 26 publications

Food allergies in children: a comparison of parental reports and skin prick test results

Food allergies in children: a comparison of parental reports and skin prick test results

Food intolerances in children and adolescents in Switzerland

Prevalence and clinical features of adverse food reactions in Portuguese adolescents

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