Association of the incidence of atopic dermatitis until 3 years old with birth month and with sunshine duration and humidity in the first 6 months of life: Japan Environment and Children’s Study

Yokomichi, Hiroshi; Mochizuki, M.; Tsuchida, Akiko; Kojima, Reiji; Horiuchi, Sayaka; Ooka, Tadao; Akiyama, Yuka; Miyake, Kunio; Otawa, Sanae; Shinohara, Ryoji; Inadera, Hidekuni; Yamagata, Zentaro

doi:10.1136/bmjopen-2020-047226

Cited by 11 publications

(16 citation statements)

References 22 publications

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“…La comorbilidad atópica más frecuente que observamos fue el asma en un tercio de los pacientes (29 %), coincidente con el grupo etario estudiado y a diferencia de pacientes adultos con DA, en los que la rinitis fue la comorbilidad más frecuente según Angles et al 8,9 Este resultado podría estar asociado al fenómeno de marcha atópica. 10,11 Al igual que lo observado por Calov M et al, [11][12][13] en el hemisferio norte y a lo referido por Yokomich H et al, en Japón, [11][12][13][14] los pacientes nacidos en otoño presentaron mayor prevalencia de DA. Se ha postulado que la exposición a los aeroalérgenos y a los virus estacionales durante esta época del año favorece el desarrollo de piel seca y picazón.…”

Section: Discussionunclassified

Dermatitis atópica en niños y adolescentes asistidos en un hospital general de la Ciudad Autónoma de Buenos Aires

2023

Arch Argent Pediat

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Dermatitis atópica en niños y adolescentes asistidos en un hospital general de la Ciudad Autónoma de Buenos Aires RESUMENLa dermatitis atópica (DA) es una enfermedad inflamatoria de la piel de alta prevalencia en pediatría, de acuerdo a estudios internacionales. Existe escasa información sobre las características epidemiológicas en la población pediátrica Argentina.El objetivo fue describir la prevalencia y características clínicas de la DA en una población de niños argentinos atendidos en el servicio de pediatría de un hospital general.Estudio observacional, de corte transversal. Se incluyeron 500 pacientes al azar, media de edad de 10 años (DE 5), el 50 % (250) de sexo femenino, de los cuales 24 presentaron DA. La prevalencia global fue del 5 % (IC95 % 3-7) y 3/24 fueron formas graves. La comorbilidad atópica más frecuente fue asma.La DA es una enfermedad con una prevalencia en nuestra población similar a la de otros países. Nuestro estudio aporta nuevos datos acerca de las características epidemiológicas de la dermatitis atópica en nuestra región.

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Section: Discussionunclassified

Dermatitis atópica en niños y adolescentes asistidos en un hospital general de la Ciudad Autónoma de Buenos Aires

2023

Arch Argent Pediat

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“…Then, we used season of birth for analysis. In a previous study, we found the highest incidence of AD in 3-year-olds born in October–December and the lowest incidence in those born in April–June [ 20 ]. Therefore, in this study, we classified seasons as spring (April–June), summer (July–September), autumn (October–December), and winter (January–March).…”

Section: Methodsmentioning

confidence: 99%

Season of birth and atopic dermatitis in early infancy: results from the Japan Environment and Children’s Study

et al. 2023

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Background Atopic dermatitis (AD) is reported to be more prevalent in children who were born in autumn than in spring. Here, we investigated how early the association between season of birth and eczema or AD can be observed in the postnatal period. We also examined whether specific prevalence outcomes for infant eczema and AD differed according to sex and maternal history of allergic disease in a large Japanese cohort. Methods Using data of 81,615 infants from the Japan Environment and Children’s Study, we examined the associations of birth month or season with four different outcomes—eczema at 1 month, 6 months, and 1 year of age and physician-diagnosed AD up to 1 year of age—using multiple logistic regression analysis. We also analyzed the effect of maternal history of allergic disease on these outcomes stratified by infant sex. Results The risk of eczema at 1 month was highest in infants born in July. In contrast, infants born in autumn had higher risks of eczema at 6 months (adjusted odds ratio [aOR], 2.19; 95% confidence interval [CI], 2.10–2.30) and at 1 year (aOR, 1.08; 95% CI, 1.02–1.14) and of physician-diagnosed AD up to 1 year of age (aOR, 1.33; 95% CI, 1.20–1.47) compared with infants born in spring. Eczema and AD were more prevalent in infants with a maternal history of allergic disease, particularly boys. Conclusions Our findings suggest that the prevalence of AD is associated with the season of observation. Eczema is prevalent in infants born in autumn, and this phenomenon was observed in infants as young as 6 months old. The risk associated with being born in autumn was particularly clear in boys with a maternal history of allergic disease. Trial registration UMIN000030786

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“…Several epidemiological studies have focused on atopic dermatitis (AD), a common skin disease in children. However, recent epidemiological studies of AD have been based on patient questionnaires 1,2 ; no studies have involved face-to-face diagnosis by expert clinicians, and so accurate information about the prevalence of AD in Japan is not available. Furthermore, AD is a disease that changes in severity and prevalence with age, 2,3 but information about the remission and onset of AD in school-aged children is scarce.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of skin diseases and prognosis of atopic dermatitis in primary school children in populated areas of Japan from 2010 to 2019: The Asa Study in Hiroshima, Japan

Tanaka

Niimi²,

Takahashi

et al. 2022

The Journal of Dermatology

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Skin diseases are common in children. However, the prevalence of childhood skin diseases in Japan has not been reported extensively. In this study, dermatologists conducted face‐to‐face examinations of primary school children over a 10‐year period to determine the prevalence of each skin disease. Atopic dermatitis (AD, 12.3%) was the most common disease among first graders, followed by eczema other than AD (9.7%), molluscum contagiosum (1.9%), and verruca vulgaris (1.1%). Among sixth graders, acne vulgaris was most common (9.6%), followed by AD (8.9%), eczema other than AD (6.7%), and verruca vulgaris (3.1%). The prevalence of AD remained stable among first graders after 2010, at approximately 10%–15%, but it increased slightly among sixth graders. Of the 87 children who had AD in first grade, 51 (58.6%) were in remission in sixth grade. On the other hand, AD was diagnosed in 30 (4.5%) sixth graders who had been among the 665 children who did not have it in first grade. The more severe the symptoms were in first grade, the more likely a child was to still have AD in sixth grade, and the more severe the later symptoms tended to be. This study investigated recent trends in skin diseases in Japanese primary school children and found that the prevalence of some skin diseases differed between first and sixth graders. It was also found that children with moderate AD in first grade were more likely to be moderate in sixth grade than those with mild AD.

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Association of the incidence of atopic dermatitis until 3 years old with birth month and with sunshine duration and humidity in the first 6 months of life: Japan Environment and Children’s Study

Cited by 11 publications

References 22 publications

Dermatitis atópica en niños y adolescentes asistidos en un hospital general de la Ciudad Autónoma de Buenos Aires

Dermatitis atópica en niños y adolescentes asistidos en un hospital general de la Ciudad Autónoma de Buenos Aires

Season of birth and atopic dermatitis in early infancy: results from the Japan Environment and Children’s Study

Prevalence of skin diseases and prognosis of atopic dermatitis in primary school children in populated areas of Japan from 2010 to 2019: The Asa Study in Hiroshima, Japan

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