Prevalence of atopic dermatitis in Japanese elementary schoolchildren

Authors

  • H. Saeki,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • H. Iizuka,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • Y. Mori,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • T. Akasaka,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • H. Takagi,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • Y. Kitajima,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • T. Tezuka,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • T. Tanaka,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • M. Hide,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • S. Yamamoto,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • Y. Hirose,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • H. Kodama,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • K. Urabe,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • M. Furue,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • F. Kasagi,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • H. Torii,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • K. Nakamura,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • E. Morita,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • Y. Tsunemi,

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • K. Tamaki

    1. Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
      *Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan
      †Department of Dermatology, Iwate Medical University, School of Medicine, Morioka, Japan
      ‡Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
      §Department of Dermatology, Kinki University School of Medicine, Osaka, Japan
      ¶Department of Dermatology, Faculty of Medicine, Hiroshima University, Hiroshima, Japan
      **Department of Dermatology, Kochi Medical School, Kochi, Japan
      ††Department of Dermatology, Faculty of Medical Science, Kyushu University, Fukuoka, Japan
      ‡‡Epidemiology Department, Radiation Effects Research Foundation, Hiroshima, Japan
      §§Department of Dermatology, Social Health Insurance Medical Center, Tokyo, Japan
      ¶¶Department of Dermatology, Fukushima Medical University, Fukushima, Japan
      ***Department of Dermatology, Shimane Medical University, Shimane, Japan
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  • Conflict of interest: None declared.

Hidehisa Saeki MD.
E-mail: SAEKI-DER@h.u-tokyo.ac.jp

Summary

Background  Although there have been several reports on the prevalence of atopic dermatitis (AD) in Japanese schoolchildren based on questionnaires, there has been no nation-wide study of the frequency of this condition diagnosed by dermatologists in regular health check-ups of schoolchildren.

Objectives  The objective of this work was to evaluate precisely the prevalence of AD in elementary schoolchildren in Japan based on regular health check-ups by dermatologists.

Methods  In 2001/2, elementary schoolchildren: first graders (age 6–7 years) and sixth graders (age 11–12 years) were examined by dermatologists in eight prefectures of Japan (Hokkaido, Iwate, Tokyo, Gifu, Osaka, Hiroshima, Kochi and Fukuoka). In each prefecture, public elementary schools were randomly selected from urban and rural districts. We planned to examine about 700 schoolchildren in each of urban first, urban sixth, rural first and rural sixth grades from the eight areas, a total of 22 400 children (700 × 4 × 8). AD was diagnosed by the dermatologists based on the Japanese Dermatological Association criteria for the disease.

Results  The point prevalence of AD was 11·2% overall (2664 of 23 719) ranging from 7·4% (Iwate) to 15·0% (Fukuoka) in the eight areas. Seventy-four per cent, 24%, 1·6% and 0·3% of those afflicted were in the mild, moderate, severe and very severe groups, respectively. Overall, the prevalence of first graders was slightly higher than that of sixth graders (11·8% vs. 10·5%, P < 0·01). There was no apparent difference in prevalence between urban and rural districts, or between boys and girls.

Conclusions  The prevalence of AD in Japanese elementary schoolchildren was about 10%, three-quarters of those being mildly affected. This is the first nation-wide study made of Japanese elementary schoolchildren examined by dermatologists to evaluate the frequency of AD.

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