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Effects of Exposure to Indoor Fine Particulate Matter on Atopic Dermatitis in Children

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  • Young-Min Kim

    (Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul 06351, Korea
    Samsung Medical Center, Department of Pediatrics, Sungkyunkwan University School of Medicine, Sungkyunkwan University, Seoul 06351, Korea)

  • Jihyun Kim

    (Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul 06351, Korea
    Samsung Medical Center, Department of Pediatrics, Sungkyunkwan University School of Medicine, Sungkyunkwan University, Seoul 06351, Korea)

  • Seoung-Chul Ha

    (SENKO Co., Ltd., Osan 18111, Korea)

  • Kangmo Ahn

    (Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul 06351, Korea
    Samsung Medical Center, Department of Pediatrics, Sungkyunkwan University School of Medicine, Sungkyunkwan University, Seoul 06351, Korea)

Abstract

This study aimed to investigate the short-term effect of exposure to indoor fine particulate matter (PM 2.5 ) on atopic dermatitis (AD) symptoms in children. Sixty-four children (40 boys and 24 girls) with moderate-to-severe AD, aged under 18 years were enrolled in the study. They were followed up from February 2019 through November 2020. Exposure to indoor PM 2.5 in each household of the enrolled children and their AD symptoms were measured daily. The generalized linear mixed model was utilized for statistical analysis. Subdivision analysis was performed by stratifying the patients by age, sex, season, severity, the presence of family allergic diseases, sensitization, and indoor environment conditions including temperature and relative humidity. A total of 9,321 person-days of AD symptom data were collected. The average PM 2.5 concentration was 28.7 ± 24.3 µg/m 3 , with the highest value in winter (47.1 ± 29.6 µg/m 3 ). The overall effect of PM 2.5 on AD symptoms was not statistically significant. However, an increase of 10 µg/m 3 in indoor PM 2.5 concentration increased AD symptom scores by 16.5% (95% CI: 6.5, 27.5) in spring and12.6% (95% CI: 4.3, 21.5) in winter, 6.7% (95% CI: 2.3, 11.3) at indoor temperatures of <25.5 °C, and by 15.0% (95% CI: 3.5, 27.7) with no use of an air purifier. The harmful effect of PM 2.5 in boys, in children aged ≥6 years, and in children with inhalant allergen sensitization was significant, showing an increase in AD symptoms of 4.9% (95% CI: 1.4, 8.6), 12.0% (95% CI: 5.3, 19.1), and 7.0% (95% CI: 1.9, 12.3) per 10 µg/m 3 of PM 2.5 , respectively. Furthermore, children with inhalant allergen sensitization plus severe symptoms (SCORing Atopic Dermatitis, SCORAD ≥ 30.7, median value) showed more harmful effects from exposure to PM 2.5 (15.7% (95% CI: 4.5, 28.1) increase in AD symptom scores per 10 µg/m 3 of PM 2.5 increase). Indoor exposure to PM 2.5 exacerbated AD symptoms in children in spring, winter, and at indoor temperatures of < 25.5 °C. In particular, this harmful effect was prominent in children with inhalant allergen sensitization and severe symptoms. Minimizing exposure to indoor PM 2.5 is needed for the proper management of AD.

Suggested Citation

  • Young-Min Kim & Jihyun Kim & Seoung-Chul Ha & Kangmo Ahn, 2021. "Effects of Exposure to Indoor Fine Particulate Matter on Atopic Dermatitis in Children," IJERPH, MDPI, vol. 18(21), pages 1-11, November.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:21:p:11509-:d:670193
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    References listed on IDEAS

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    1. Le Thi Nhu Ngoc & Duckshin Park & Yongil Lee & Young-Chul Lee, 2017. "Systematic Review and Meta-Analysis of Human Skin Diseases Due to Particulate Matter," IJERPH, MDPI, vol. 14(12), pages 1-11, November.
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    Cited by:

    1. Raj P. Fadadu & Katrina Abuabara & John R. Balmes & Jon M. Hanifin & Maria L. Wei, 2023. "Air Pollution and Atopic Dermatitis, from Molecular Mechanisms to Population-Level Evidence: A Review," IJERPH, MDPI, vol. 20(3), pages 1-21, January.

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