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Rhinitis arises from either allergic or non-allergic inflammation of the nasal mucosa, characterized by the infiltration of inflammatory cells into the tissue and nasal secretions, along with structural alterations in the nasal mucosa. The pathways through which air pollution affects rhinitis may diverge from those affecting asthma. This article aims to review the effects of diverse air pollutants on the nose, the correlation of climate change and pollution, and how they aggravate the symptoms of patients with rhinitis.

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BACKGROUND: To assess the efficacy of applying the endoscopic reference score for EoE (EREFS) in children with symptoms of esophageal dysfunction naïve to proton pump inhibitor (PPI) therapy. METHODS: An observational cross-sectional study was conducted by reviewing reports and photographs of upper gastrointestinal endoscopies (UGE) and esophageal biopsies of patients with symptoms of esophageal dysfunction. Patients who were treated with PPI or had other conditions that may cause esophageal eosinophilia were excluded. RESULTS: Of the 2,036 patients evaluated, endoscopic findings of EoE were identified in 248 (12.2%) and more than one abnormality was observed in 167 (8.2%). Among all patients, 154 (7.6%) presented esophageal eosinophilia (≥15 eosinophils per high power field) (P<0.01). In this group, 30 patients (19.5%) had normal endoscopy. In patients with EoE, edema (74% vs 6.5%, P<0.01) and furrows (66.2% vs 2.4%, P<0.01) were more prevalent than in the control group. Association of edema and furrows was more frequent in patients with EoE than in the control group (29.2% vs 1.6%, P<0.01, OR=24.7, CI=15.0-40.5). The presence of more than one endoscopic finding had sensitivity of 80.5%, specificity of 93.4%, positive predictive value (PPV) of 50%, negative predictive value (NPV) of 98.3%, and accuracy of 92.4%. CONCLUSION: In conclusion, this study showed that endoscopic features suggestive of EoE had high specificity and NPV for diagnosing EoE in children naïve to PPI therapy. These findings highlight the importance of the EREFS in contributing to early identification of inflammatory and fibrostenosing characteristics of EoE, making it possible to identify and to avoid progression of the disease. BACKGROUND: • The EoE endoscopic reference score (EREFS) was developed and validated in adults and has been demonstrated to be an adequate tool for diagnosing and assessing treatment response in children. BACKGROUND: • The presence of more than one endoscopic finding stronglysuggests EoE. BACKGROUND: • The EoE endoscopic reference score presents high specificity and negative predictive value for diagnosing EoE in children naïve to proton pump inhibitor (PPI) therapy. BACKGROUND: • Endoscopic findings suggestive of EoE in patients naïve to treatment may be useful to characterize disease phenotype and individualize treatment according to the initial clinical presentation.

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ABSTRACT Background: To assess the efficacy of applying the endoscopic reference score for EoE (EREFS) in children with symptoms of esophageal dysfunction naïve to proton pump inhibitor (PPI) therapy. Methods: An observational cross-sectional study was conducted by reviewing reports and photographs of upper gastrointestinal endoscopies (UGE) and esophageal biopsies of patients with symptoms of esophageal dysfunction. Patients who were treated with PPI or had other conditions that may cause esophageal eosinophilia were excluded. Results: Of the 2,036 patients evaluated, endoscopic findings of EoE were identified in 248 (12.2%) and more than one abnormality was observed in 167 (8.2%). Among all patients, 154 (7.6%) presented esophageal eosinophilia (≥15 eosinophils per high power field) (P<0.01). In this group, 30 patients (19.5%) had normal endoscopy. In patients with EoE, edema (74% vs 6.5%, P<0.01) and furrows (66.2% vs 2.4%, P<0.01) were more prevalent than in the control group. Association of edema and furrows was more frequent in patients with EoE than in the control group (29.2% vs 1.6%, P<0.01, OR=24.7, CI=15.0-40.5). The presence of more than one endoscopic finding had sensitivity of 80.5%, specificity of 93.4%, positive predictive value (PPV) of 50%, negative predictive value (NPV) of 98.3%, and accuracy of 92.4%. Conclusion: In conclusion, this study showed that endoscopic features suggestive of EoE had high specificity and NPV for diagnosing EoE in children naïve to PPI therapy. These findings highlight the importance of the EREFS in contributing to early identification of inflammatory and fibrostenosing characteristics of EoE, making it possible to identify and to avoid progression of the disease.

RESUMO Contexto: Avaliar a eficácia da aplicação do escore de referência endoscópico para EoE (EREFS) em crianças com sintomas de disfunção esofágica sem tratamento prévio com inibidores da bomba de prótons (IBP). Métodos: Foi realizado um estudo transversal observacional por meio de revisão de laudos e fotos de endoscopia digestiva alta (EDA) e biópsias de esôfago de pacientes com sintomas de disfunção esofágica. Pacientes tratados com IBP ou com outras condições que podem causar eosinofilia esofágica foram excluídos. Resultados: Dos 2.036 pacientes avaliados, os achados endoscópicos de EoE foram identificados em 248 (12,2%) e mais de uma anormalidade foi observada em 167 (8,2%). Entre todos os pacientes, 154 (7,6%) apresentaram eosinofilia esofágica (≥15 eosinófilos por campo de grande aumento) (P<0,01). Nesse grupo, 30 pacientes (19,5%) apresentaram endoscopia normal. Em pacientes com EoE, edema (74% vs 6,5%, P<0,01) e linhas verticais (66,2% vs 2,4%, P<0,01) foram mais prevalentes quando comparados ao grupo controle. A associação de edema e linhas verticais foi mais frequente em pacientes com EoE do que no grupo controle (29,2% vs 1,6%, P<0,01, OR=24,7, IC=15,0-40,5). A presença de mais de um achado endoscópico teve sensibilidade de 80,5%, especificidade de 93,4%, valor preditivo positivo de 50%, valor preditivo negativo de 98,3% e acurácia de 92,4%. Conclusão: Em conclusão, esse estudo mostrou que as características endoscópicas sugestivas de EoE apresentam especificidade e VPN elevados para o diagnóstico da enfermidade em crianças sem tratamento prévio com IBP. Estes achados reforçam a importância do EREFS em contribuir para a identificação precoce de características inflamatórias e fibroestenosantes, possibilitando identificar e evitar a progressão da doença.

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Background: Recent data about clinical features, triggers and management of anaphylaxis in Latin America is lacking. Objective: To provide updated and extended data on anaphylaxis in this region. Method: An online questionnaire was used, with 67 allergy units involved from 12 Latin-American countries and Spain. Among data recorded, demographic information, clinical features, severity, triggering agents, and treatment were received. Results: Eight hundred and seventeen anaphylactic reactions were recorded. No difference in severity, regardless of pre-existing allergy or asthma history was found. Drug induced anaphylaxis (DIA) was most frequent (40.6%), followed by food induced anaphylaxis (FIA) (32.9%) and venom induced anaphylaxis (VIA) (12%). FIA and VIA were more common in children-adolescents. Non-steroidal anti-inflammatory drugs (NSAIDs) and beta-lactam antibiotics (BLA) were the most frequent drugs involved. Milk (61.1% of FIA) and egg (15.4% of FIA) in children, and shellfish (25.5% of FIA), fresh fruits (14.2% of FIA), and fish (11.3% of FIA) in adults were the most common FIA triggers. Fire ants were the most frequent insect triggers, and they induced more severe reactions than triggers of FIA and DIA (p < 0.0001). Epinephrine was used in 43.8% of anaphylaxis episodes. After Emergency Department treatment, epinephrine was prescribed to 13% of patients. Conclusions: Drugs (NSAIDs and BLA), foods (milk and egg in children and shellfish, fruits and fish in adults) and fire ants were the most common inducers of anaphylaxis. Epinephrine was used in less than half of the episodes emphasizing the urgent need to improve dissemination and implementation of anaphylaxis guidelines.

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An outbreak of coronavirus disease 2019 (COVID-19) caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) started in Wuhan, Hubei Province, China and quickly spread around the world. Current evidence is contradictory on the association of asthma with COVID-19 and associated severe outcomes. Type 2 inflammation may reduce the risk for severe COVID-19. Whether asthma diagnosis may be a risk factor for severe COVID-19, especially for those with severe disease or non-allergic phenotypes, deserves further attention and clarification. In addition, COVID-19 does not appear to provoke asthma exacerbations, and asthma therapeutics should be continued for patients with exposure to COVID-19. Changes in the intensity of pollinization, an earlier start and extension of the pollinating season, and the increase in production and allergenicity of pollen are known direct effects that air pollution has on physical, chemical, and biological properties of the pollen grains. They are influenced and triggered by meteorological variables that could partially explain the effect on COVID-19. SARS-CoV-2 is capable of persisting in the environment and can be transported by bioaerosols which can further influence its transmission rate and seasonality. The COVID-19 pandemic has changed the behavior of adults and children globally. A general trend during the pandemic has been human isolation indoors due to school lockdowns and loss of job or implementation of virtual work at home. A consequence of this behavior change would presumably be changes in indoor allergen exposures and reduction of inhaled outdoor allergens. Therefore, lockdowns during the pandemic might have improved some specific allergies, while worsening others, depending on the housing conditions.

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The aim of this systematic review (SR) was to evaluate the most frequent pollutants and their effect on allergic rhinitis in Latin American countries. Observational studies up to December 2020 and comparing different indoor and outdoor pollutants that had allergic rhinitis (AR) as an outcome were included in the systematic review. Random-effect meta-analyses were conducted for the presence of allergic rhinitis. Estimates were presented as pooled odds ratios (ORs) and their respective 95% confidence intervals (CIs). Twenty-two publications comprised this review according to the inclusion and exclusion criteria and 12 had data that could be analyzed statistically. The most frequent pollutant was PM10, followed by NO2 /O3 and PM2.5 in studies conducted in Argentina, Brazil, Bolivia, Chile, Colombia, Costa Rica, and Peru. The OR of an exposed subject experiencing allergic rhinitis was 1.43 (95% CI 1.026; 1.980). The OR of children and adolescents experiencing of allergic rhinitis was 1.359 (95% CI 1.051; 1.759). Asymmetry and great variability in the effect estimated from the selected studies were observed. The publication bias was quantified by Kendall's correlation and Egger's test resulted in 0.152 (p-value = 0.493). Egger's test provided an intercept equal to 2.511 and a p-value = 0.398. The I2 statistic was 89.3% and reinforces the hypothesis of heterogeneity. This first systematic review conducted in Latin America confirmed the chance of a person exposed to pollutants and experiencing allergic rhinitis is 43% greater than that of a non-exposed person, reinforcing the importance of policies to reduce pollutant exposure and the use of protection systems for workforces exposed to occupational pollutants in work environments.

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Abstract Introduction The extent of epithelial lesion in allergic and non-allergic rhinitis and its association with inflammatory changes in nasal lavage has not been clarified. Objective To verify the association between the inflammatory cells in the nasal lavage, epithelial lesion extent and basement membrane thickness, in the nasal mucosa of patients with rhinitis; to determine the cutoff point of the percentage of eosinophils in the nasal lavage associated with the atopic patients. Methods Patients with rhinitis and indication for septoplasty and (or) turbinectomy for turbinate hypertrophy were selected, and were submitted to allergy skin tests, nasal lavage with measurement of albumin and interleukin-8 levels, total and differential counting of cells, and mucosal histopathological analysis to determine the extent of epithelial lesion, and degree of basement membrane thickening. Results Fifty-six patients with a median age of 24.5 years and a diagnosis of allergic rhinitis (n = 36) and non-allergic rhinitis (n = 20) were studied. In atopic subjects, allergy skin tests were positive for Dermatophagoides pteronyssinus in 35 (97.0%) and Lolium perenne in 18 (50.0%). Atopic subjects showed a higher clinical score index of rhinitis compared to non-atopic ones. The total count of cells, neutrophils, and levels of albumin and IL-8 were not different in the nasal lavage of atopic and non-atopic subjects. The cutoff point for eosinophil count in nasal fluid for the distinction between allergic rhinitis and non-allergic rhinitis was 4%. Some degree of epithelial lesion was more frequent in allergic rhinitis (94%) than in non-allergic rhinitis (65%) patients. In the presence of basement membrane thickness, as a marker of remodeling, there was no difference in the nasal lavage of patients with allergic rhinitis and non-allergic rhinitis. Conclusion In this series, 4% was the cutoff point for the number of eosinophils in the nasal lavage, for atopy differentiation. Upper airway remodeling accessed by basement membrane thickness showed similar inflammatory cell infiltrate in the nasal lavage, regardless of the presence of atopy.

Resumo Introdução A extensão da lesão epitelial na rinite alérgica e não alérgica e sua associação com alterações inflamatórias no lavado nasal ainda não estão esclarecidas. Objetivo Verificar a relação entre o processo inflamatório no lavado nasal, extensão da lesão epitelial e espessamento da membrana basal na mucosa nasal de pacientes com rinite; determinar o ponto de corte do percentual de eosinófilos no lavado nasal associado à presença de atopia. Método Foram selecionados pacientes com rinite e indicação de septoplastia e (ou) turbinectomia por hipertrofia de conchas nasais, os quais foram submetidos aos testes cutâneos alérgicos, lavado nasal com determinação das concentrações de albumina, interleucina-8 (IL-8), contagem total e diferencial de células, análise da extensão da lesão epitelial, e grau de espessamento da membrana basal por meio de histopatologia da mucosa. Resultado Foram estudados 56 pacientes, mediana de 24,5 anos com diagnóstico de rinite alérgica (n = 36) e rinite não alérgica (n = 20). Nos atópicos os testes cutâneos alérgicos foram positivos para D. pteronyssinus em 35 (97,0%) e L. perenne em 18 (50,0%). Atópicos apresentaram maior índice de escore clínico para rinite em comparação a não atópicos. A contagem total de células, neutrófilos e níveis de albumina e IL-8 não foi diferente entre o lavado nasal de atópicos e não atópicos. O ponto de corte da contagem de eosinófilos no fluido nasal para a distinção de rinite alérgica e rinite não alérgica foi de 4%. Algum grau de lesão epitelial foi mais frequente em pacientes com rinite alérgica (94%) do que em pacientes com rinite não alérgica (65%). Na presença de espessamento da membrana basal, como marcador de remodelamento, não houve diferença no lavado nasal entre pacientes com rinite alérgica e não alérgica. Conclusão Nesta casuística, 4% foi o ponto de corte do número de eosinófilos no lavado nasal, para diferenciação de atopia. Remodelamento da via aérea superior pelo espessamento da membrana basal revelou infiltrado semelhante de células inflamatórias no lavado nasal, independentemente da presença de atopia.

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BACKGROUND: Small-colony variants (SCVs) are a morphologic subtype of Staphylococcus aureus that may occur through several mechanisms including auxotrophism for thymidine, hemin, or menadione. Auxotrophic SCV for thymidine fail to synthesize DNA specifically because of mutations in the thymidylate synthase gene. We isolated S. aureus thymidine-dependent SCVs (TD-SCV) from blood and respiratory samples of a pediatric patient with cystic fibrosis and pulmonary exacerbation. METHODS: Nutritional dependence of SCVs on hemin, menadione, and thymidine was evaluated. Antimicrobial susceptibility testing was performed through broth microdilution. Polymerase chain reaction was carried out for mecA, ermA, ermB, ermC, msrA, and msrB resistance genes. DNA sequencing was used to determine mutations in thyA and the multilocus sequence typing to identify genetic relatedness. RESULTS: Methicillin-sensitive S. aureus with normal and TD-SCV phenotypes were isolated from respiratory samples and a TD-SCV phenotype was isolated from blood culture. Macrolides resistance was attributed to ermC and msrB genes. All isolates belonged to ST398. The thyA gene in S. aureus is 957 nucleotides in length and encodes a protein of 318 amino acids. The TD-SCV isolates carried a -2 nt frameshift mutation (delta 667GC668) in thyA, creating a stop codon at residue 222 close to the predicted binding site for deoxyuridine monophosphate. CONCLUSIONS: The pathogenesis of SCVs is complex and not fully elucidated. Factors inherent to the patient such as physiological conditions, recurrent infections, or coinfection should be considered. Although SCVs are considered less virulent, they showed the ability to invade and cause bacteremia in the patient.

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INTRODUCTION: The extent of epithelial lesion in allergic and non-allergic rhinitis and its association with inflammatory changes in nasal lavage has not been clarified. OBJECTIVE: To verify the association between the inflammatory cells in the nasal lavage, epithelial lesion extent and basement membrane thickness, in the nasal mucosa of patients with rhinitis; to determine the cutoff point of the percentage of eosinophils in the nasal lavage associated with the atopic patients. METHODS: Patients with rhinitis and indication for septoplasty and (or) turbinectomy for turbinate hypertrophy were selected, and were submitted to allergy skin tests, nasal lavage with measurement of albumin and interleukin-8 levels, total and differential counting of cells, and mucosal histopathological analysis to determine the extent of epithelial lesion, and degree of basement membrane thickening. RESULTS: Fifty-six patients with a median age of 24.5 years and a diagnosis of allergic rhinitis (n=36) and non-allergic rhinitis (n=20) were studied. In atopic subjects, allergy skin tests were positive for Dermatophagoides pteronyssinus in 35 (97.0%) and Lolium perenne in 18 (50.0%). Atopic subjects showed a higher clinical score index of rhinitis compared to non-atopic ones. The total count of cells, neutrophils, and levels of albumin and IL-8 were not different in the nasal lavage of atopic and non-atopic subjects. The cutoff point for eosinophil count in nasal fluid for the distinction between allergic rhinitis and non-allergic rhinitis was 4%. Some degree of epithelial lesion was more frequent in allergic rhinitis (94%) than in non-allergic rhinitis (65%) patients. In the presence of basement membrane thickness, as a marker of remodeling, there was no difference in the nasal lavage of patients with allergic rhinitis and non-allergic rhinitis. CONCLUSION: In this series, 4% was the cutoff point for the number of eosinophils in the nasal lavage, for atopy differentiation. Upper airway remodeling accessed by basement membrane thickness showed similar inflammatory cell infiltrate in the nasal lavage, regardless of the presence of atopy.

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Objetivos: Comparar a potência de extratos europeus de Phleum pratense para imunoterapia sublingual (ITSL), em relação ao extrato referência norte-americano. Métodos: Foram selecionados 15 sujeitos, com idade entre 18 e 55 anos, histórico clínico sazonal compatível e teste cutâneo com alta reatividade a gramíneas. O delineamento de estudo foi transversal, triplo cego e randômico, e comparadas as potências dos seguintes extratos alergênicos para ITSL: (A) Soluprick® (30 HEP/mL) e (B) Grazax® 75.000 SQ-T, ambos os extratos da ALK-Abelló; (C) Oralair® e (D) Staloral®, com 300 IR/mL, Stallergènes, França. O extrato de origem norteamericana (E) foi o padrão, contendo 10.000 BAU/mL. Todos os extratos foram usados em forma de concentrados e nas diluições 1:3, 1:10, e 1:30. Os testes foram aplicados em quadruplicata em dois dias não consecutivos. Os diâmetros de pápula e eritema foram registrados após 15 minutos. Resultados: Não houve diferença significativa entre os testes realizados no primeiro e segundo dias (p = 0,37) com extratos concentrados, na diluição 1:3 e também 1:10 (p = 0,20 e p = 0,33, respectivamente). No segundo dia de testes, a média obtida das pápulas do extrato A foi de 16,7 mm na diluição 1:3; de 14,3 mm na diluição 1:10; e de 9,8 mm na diluição 1:30. Houve diferenças significativas entre os extratos A, B, C, D e E na comparação entre as médias das pápulas obtidas em todas as diluições, mostrando diferença de potência entre os extratos. O diâmetro das pápulas obtidas com o material concentrado, em ordem decrescente de potência, foram C > A > E > D > B. As reações observadas com extratos concentrados mostrou que o mais potente foi Staloral, e o menos potente Grazax. Conclusões: Houve variabilidade significativa de potência nos diversos extratos comparados. Isto reforça a necessidade de padronização de extratos alergênicos para ITSL.

Objectives: To compare the potency of European Phleum pratense pollen extracts for sublingual immunotherapy (SLIT) compared to the U.S. reference extract. Methods: Fifteen subjects aged between 18 and 55 years, with compatible seasonal clinical history and skin tests highly reactive to grass, were selected. The design was cross-sectional, blind, randomized. The following extracts were compared for SLIT: (A) Soluprick® (30 HEP/mL) and (B) Grazax® 75,000 SQ-T, both from ALK-Abelló; (C) Oralair® and (D) Staloral®, with 300 IR/mL, Stallergènes, France. The American extract (E) was the standard 10,000 BAU/mL. Extracts were used in concentrate form and also diluted in 1:3, 1:10, and 1:30 ratios. Tests were applied in quadruplicate on two nonconsecutive days. Skin test reading were done after 15 minutes. Results: There were no significant differences between the tests conducted on the first and second days with the extracts in concentrate form (p = 0.37) or diluted at 1:3 or 1:10 (p = 0.20, p = 0.33, respectively). On the second day of tests, mean wheal sizes obtained with extract A were 16.7 mm with the 1:3 dilution, 14.3 mm with the 1:10 dilution, and 9.8 mm with the 1:30 dilution. There were significant differences between extracts A, B, C, D and E when comparing mean wheal sizes obtained with all dilutions, demonstrating differences in the extracts' potency. Mean wheal diameters obtained with the concentrates, in decreasing order of potency, were C > A > E > D > B. The reactions showed that the most potent extract was Staloral, and the least potent, Grazax. Conclusions: There were significant potency variations in the different extracts assessed. These results reinforce the need for standardization of allergenic extracts used for SLIT.

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Abstract Introduction The guidelines on allergic rhinitis aim to update knowledge about the disease and care for affected patients. The initiative called "Allergic Rhinitis and its Impact on Asthma", initially published in 2001 and updated in 2008 and 2010, has been very successful in disseminating information and evidence, as well as providing a classification of severity and proposing a systemized treatment protocol. In order to include the participation of other medical professionals in the treatment of allergic rhinitis, it is important to develop algorithms that accurately indicate what should and can be done regionally. Objective To update the III Brazilian Consensus on Rhinitis - 2012, with the creation of an algorithm for allergic rhinitis management. Methods We invited 24 experts nominated by the Brazilian Association of Allergy and Immunology, Brazilian Association of Otorhinolaryngology and Head and Neck Surgery and Brazilian Society of Pediatrics to update the 2012 document. Results The update of the last Brazilian Consensus on Rhinitis incorporated and adapted the relevant information published in all "Allergic Rhinitis and its Impact on Asthma" Initiative documents to the Brazilian scenario, bringing new concepts such as local allergic rhinitis, new drugs and treatment evaluation methods. Conclusion A flowchart for allergic rhinitis treatment has been proposed.

Resumo Introdução As diretrizes sobre rinite alergica visam atualizar os conhecimentos sobre a doença e os cuidados para com esses pacientes. A iniciativa designada "Rinite Alergica e seu Impacto na Asma", cujo relatorio inicial foi publicado em 2001 e atualizada em 2008 e 2010, tem sido muito bem sucedida na disseminaçao de informaçoes e evidencias, bem como na formulaçao da classificaçao de gravidade e proposta de sistematizaçao do tratamento. Entretanto, visando a participaçao de outros profissionais medicos no atendimento da rinite alergica, e importante o desenvolvimento de algoritmos que indiquem com precisao o que deve e pode ser feito regionalmente. Objetivo Atualizar o III Consenso Brasileiro sobre Rinites-2012, com elaboraçao de algoritmo para conduta da rinite alergica. Método Foram convidados 24 especialistas indicados pelas Associaçao Brasileira de Alergia e Imunologia, Associaçao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial e Sociedade Brasileira de Pediatria para atualizaçao do documento de 2012. Resultados A atualizaçao do ultimo Consenso Brasileiro sobre Rinites, incorporou e adaptou para a realidade brasileira as informaçoes relevantes publicadas em todos os documentos da Iniciativa "Rinite Alergica e seu Impacto na Asma", trazendo novos conceitos como a rinite alergica local, novos medicamentos e metodos de avaliaçao de tratamento. Conclusão Proposto um fluxograma de tratamento para a rinite alergica.

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INTRODUCTION: The guidelines on allergic rhinitis aim to update knowledge about the disease and care for affected patients. The initiative called "Allergic Rhinitis and its Impact on Asthma", initially published in 2001 and updated in 2008 and 2010, has been very successful in disseminating information and evidence, as well as providing a classification of severity and proposing a systemized treatment protocol. In order to include the participation of other medical professionals in the treatment of allergic rhinitis, it is important to develop algorithms that accurately indicate what should and can be done regionally. OBJECTIVE: To update the III Brazilian Consensus on Rhinitis - 2012, with the creation of an algorithm for allergic rhinitis management. METHODS: We invited 24 experts nominated by the Brazilian Association of Allergy and Immunology, Brazilian Association of Otorhinolaryngology and Head and Neck Surgery and Brazilian Society of Pediatrics to update the 2012 document. RESULTS: The update of the last Brazilian Consensus on Rhinitis incorporated and adapted the relevant information published in all "Allergic Rhinitis and its Impact on Asthma" Initiative documents to the Brazilian scenario, bringing new concepts such as local allergic rhinitis, new drugs and treatment evaluation methods. CONCLUSION: A flowchart for allergic rhinitis treatment has been proposed.

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A dermatite atópica (DA) é uma doença crônica e recidivante que acomete principalmente pacientes da faixa etária pediátrica. A fisiopatologia inclui fatores genéticos, alterações na barreira cutânea e imunológicas. A prevalência da DA no Brasil, entre adolescentes, oscila entre 7,1% e 12,5%, com tendência à estabilização. O diagnóstico é clínico, e exames complementares auxiliam na determinação dos fatores desencadeantes. A identificação dos fatores irritantes e/ou desencadeantes envolvidos permite melhor controle das crises. Entre os fatores desencadeantes destacam-se os agentes infecciosos, alérgenos alimentares e aeroalérgenos. Tomando-se como ponto de partida o "Guia Prático para o Manejo da Dermatite Atópica ­ opinião conjunta de especialistas em alergologia da Associação Brasileira de Alergia e Imunopatologia e da Sociedade Brasileira de Pediatria" publicado em 2006, foi realizada revisão e atualização dos conceitos apresentados por grupo de alergologistas, dermatologistas e pediatras especializados no tratamento de pacientes com DA. O objetivo desta revisão foi elaborar um documento prático e que auxilie na compreensão dos mecanismos envolvidos na DA, assim como dos possíveis fatores de risco associados a sua apresentação, bem como sobre a avaliação subsidiária disponível para a identificação dos fatores associados à DA.

Atopic dermatitis (AD) is a chronic, recurrent skin disease that mainly affects pediatric patients. The pathophysiology of AD includes genetic factors, skin barrier abnormalities, and immunological factors. The prevalence of AD in Brazil, among adolescents, ranges from 7.1% to 12.5%, with a trend towards stabilization. The diagnosis of AD is clinical, and complementary tests can help determine the triggering factors. Identification of the irritating and/or triggering factors involved allows better control of exacerbations. Among the triggering factors, infectious agents, food allergens, and aeroallergens stand out. Taking as a starting point the Practical Guide for the Management of Atopic Dermatitis ­ joint opinion of specialists in allergology of the Brazilian Association of Allergy and Immunopathology and of the Brazilian Society of Pediatrics, published in 2006, the present paper describes the results of the review and update of different concepts related to AD, conducted by a group of allergists, dermatologists, and pediatricians specializing in the treatment of patients with AD. The objective of this review was to design a practical document that can help improve our understanding of the mechanisms involved in AD, possible risk factors associated with its presentation, as well as ancillary tests available to identify factors associated with AD.

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Nas últimas décadas o conhecimento sobre a etiopatogenia da dermatite atópica (DA) avançou muito. Além da identificação dos principais agentes desencadeantes e/ou agravantes envolvidos na expressão clínica da DA, verificou-se ser a integridade da barreira cutânea um dos pontos fundamentais para a manutenção da homeostase da pele. Assim, no tratamento do paciente com DA, além da evitação dos agentes desencadeantes e/ou irritantes, o uso de hidratantes é parte fundamental, e acredita-se que tenha ação preventiva de surtos agudos. Além disso, a aquisição de agentes anti-inflamatórios de uso tópico tem permitido o controle de pacientes com formas leves a moderadas da DA. Embora tenham uso mais restrito, os agentes imunossupressores sistêmicos também têm sido empregados no tratamento de pacientes com DA grave ou refratária aos procedimentos habituais. Comenta-se também a imunoterapia alérgeno-específica como tratamento adjuvante da DA para alguns pacientes, sobretudo alérgicos aos ácaros e com manifestações respiratórias associadas. A aquisição de novos agentes, os imunobiológicos, também são apresentados à luz das evidências científicas e clínicas atuais. O presente guia prático de atualização em dermatite atópica ­ abordagem terapêutica teve por objetivo rever os esquemas de tratamento disponíveis e empregados no acompanhamento de pacientes com DA, além de apresentar terapêuticas futuras, como os agentes imunobiológicos que em breve estarão à disposição para o tratamento de formas mais graves e/ou refratárias da DA.

Over the last few decades, knowledge of the etiopathogenesis of atopic dermatitis (AD) advanced greatly. The main triggering and/or aggravating factors involved in the clinical expression of AD have been identified, and cutaneous barrier integrity has been found to be key for the maintenance of skin homeostasis. Thus, when treating patients with AD, in addition to avoiding triggering and/ or irritating agents, recommending the use of skin moisturizers is paramount ­ and believed to have a preventive action against acute outbreaks. Moreover, topical anti-inflammatory agents have allowed AD control in patients with mild to moderate forms of the disease. Although more restricted, systemic immunosuppressive agents have also been used in the treatment of patients with severe or refractory AD. Specific allergen immunotherapy is presented as a possible adjunctive treatment for AD in some patients, especially those allergic to mites and presenting associated respiratory manifestations. Finally, the use of new immunobiological agents is discussed in the light of the scientific and clinical evidence currently available. The objectives of this updated practical guide on atopic dermatitis ­ treatment approach were to review the treatment regimens available and used in the follow-up of patients with AD and to present new therapies (e.g., immunobiological agents) that will soon be available for the treatment of more severe and/ or refractory forms of AD.

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OBJECTIVE: To determine the prevalence of symptoms of asthma, rhinitis, and atopic eczema in adolescents (AD; 13-14 years) living in seven Brazilian cities, by applying the standardized written questionnaire (WQ) of the International Study of Asthma and Allergies in Childhood (ISAAC), and to evaluate the time trend nine years after the last assessment of ISAAC phase 3 (ISP3). METHODS: The ISAAC-WQ was answered by 20,099 AD from the Northern, Northeastern, Southeastern, and Southern Brazilian regions. Values obtained were compared to those observed in ISP3 using nonparametric (chi-squared or Fisher) tests, and the ratio of annual increment/decrement was established for each of the centers, according to the symptom assessed. RESULTS: Considering the national data and comparing to values of ISP3, there was a decrease in the mean prevalence of active asthma (18.5% vs. 17.5%) and an increase in the frequency of severe asthma (4.5% vs. 4.7%) and physician-diagnosed asthma (14.3% vs. 17.6%). An increase in prevalence of rhinitis, rhinoconjunctivitis, and atopic eczema was also observed. CONCLUSIONS: The prevalence of asthma, rhinitis, and atopic eczema in Brazil was variable; higher prevalence values, especially of asthma and eczema, were observed in regions located closer to the Equator. .

OBJETIVO: Determinar a prevalência de sintomas relacionados à asma, à rinite e ao eczema atópico em adolescentes (13-14 anos, AD) residentes em sete cidades brasileiras com o questionário escrito (QE) padronizado do International Study of Asthma and Allergies in Childhood (Isaac) e verificar a tendência temporal passados nove anos da última avaliação do Isaac fase 3 (ISF3). MÉTODOS: O QE Isaac foi respondido por 20.099 AD (13-14 anos) moradores em centros das regiões Norte, Nordeste, Sudeste e Sul. Os índices obtidos foram comparados aos do ISF3 com o teste não paramétrico (qui-quadrado ou Fisher) e foi estabelecida a taxa de incremento/decremento anual para cada um dos centros segundo o sintoma avaliado. RESULTADOS: Em relação ao ISF3, considerando-se os dados nacionais, houve queda da prevalência média de asma ativa (18,5% vs. 17,5%) com elevação da frequência de asma grave (4,5% vs. 4,7%) e de asma diagnosticada por médico (14,3% vs. 17,6%). Aumento da prevalência de rinite e rinoconjuntivite e de eczema flexural também ocorreram. CONCLUSÕES: A prevalência de asma, rinite e eczema atópico no Brasil foi variável. Valores mais altos, sobretudo de asma e eczema, foram observados nos centros localizados mais próximos ao Equador. .

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OBJECTIVE: To determine the prevalence of symptoms of asthma, rhinitis, and atopic eczema in adolescents (AD; 13-14 years) living in seven Brazilian cities, by applying the standardized written questionnaire (WQ) of the International Study of Asthma and Allergies in Childhood (ISAAC), and to evaluate the time trend nine years after the last assessment of ISAAC phase 3 (ISP3). METHODS: The ISAAC-WQ was answered by 20,099 AD from the Northern, Northeastern, Southeastern, and Southern Brazilian regions. Values obtained were compared to those observed in ISP3 using nonparametric (chi-squared or Fisher) tests, and the ratio of annual increment/decrement was established for each of the centers, according to the symptom assessed. RESULTS: Considering the national data and comparing to values of ISP3, there was a decrease in the mean prevalence of active asthma (18.5% vs. 17.5%) and an increase in the frequency of severe asthma (4.5% vs. 4.7%) and physician-diagnosed asthma (14.3% vs. 17.6%). An increase in prevalence of rhinitis, rhinoconjunctivitis, and atopic eczema was also observed. CONCLUSIONS: The prevalence of asthma, rhinitis, and atopic eczema in Brazil was variable; higher prevalence values, especially of asthma and eczema, were observed in regions located closer to the Equator.

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OBJECTIVE: this study aimed to prepare a silkworm moth (Bombyx mori) antigenic extract and to perform skin prick tests with this extract in patients with allergic respiratory diseases; to evaluate serum specific immunoglobulin E (IgE) to Bombyx mori using ImmunoCAP(r) system and to report the frequency of positivity between the two methods and with clinical data. METHODS: this was a cross-sectional study with 99 children and adolescents diagnosed with asthma and/or allergic rhinitis, who had skin reactivity to at least one of the six aeroallergens tested. Clinical data were evaluated: skin prick tests with Bombyx mori in-house extract, and total and specific IgE analysis using ImmunoCAP(r) were performed. RESULTS: the frequency of Bombyx mori specific IgE was found to be 52.5% and 60% using the skin prick test and ImmunoCAP(r), respectively. An association between a positive skin test for Bombyx mori and the presence of allergic rhinitis, atopic dermatitis, and urticaria was observed, but the same was not true for asthma or allergic conjunctivitis. There was no relation with the severity of asthma or rhinitis symptoms. CONCLUSIONS: a high frequency of sensitization to Bombyx mori was observed in a selected population of patients with respiratory allergic diseases in the city of Curitiba, state of Paraná, Brazil. The extract prepared from the wings of this moth species is effective in demonstrating this sensitivity. .

OBJETIVO: preparar extrato antigênico da mariposa do bicho-da-seda (Bombyx mori) e realizar testes cutâneos com esse extrato em pacientes com doenças respiratórias alérgicas, avaliar IgE sérica específica para Bombyx mori usando o sistema ImmunoCAP(r) e comparar a frequência de positividade entre os dois métodos e com dados clínicos. MÉTODOS: Estudo transversal com 99 crianças e adolescentes com diagnóstico de asma e/ou rinite alérgica, que apresentaram reação cutânea a pelo menos um dos seis aeroalérgenos testados. Os dados clínicos foram avaliados; testes cutâneos com extrato de Bombyx mori e análise de IgE total e específica por ImmunoCAP(r) foram realizados. RESULTADOS: a frequência de IgE específica para Bombyx mori foi de 52,5% e 60%, respectivamente, pelo teste cutâneo e ImmunoCAP(r). Foi observada uma associação entre o teste cutâneo positivo para Bombyx mori e a presença de rinite alérgica, dermatite atópica e urticária, mas o mesmo não ocorreu para a asma ou conjuntivite alérgica. Não houve relação com a gravidade dos sintomas de asma ou rinite. CONCLUSÕES: alta frequência de sensibilização à Bombyx mori foi encontrada em uma população selecionada de pacientes com doenças alérgicas respiratórias na cidade de Curitiba, estado do Paraná, Brasil. O extrato preparado a partir das asas dessa espécie de mariposa é eficaz em demonstrar essa sensibilidade. .

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