A research team led by Associate Professor Yoji Yokomichi of the University of Yamanashi investigated the relationship between the month of birth of a child and the incidence of atopic dermatitis. It was found that the incidence was highest and that of children born between April and June was low.
The risk factors for atopic dermatitis in children are allergic diseases of parents as genetic factors, weather conditions as environmental factors, those that cause itching, types of bacteria that spread on the skin, psychological stress, and birth. There is a month.It is said that the incidence of autumn birth is high in Japan, but there are few data.Also, few studies have investigated the relationship with meteorological conditions.
This time, the research team used the data of the "National Survey on Children's Health and Environment (Ecochill Survey)" targeting about 10 children, and the incidence of atopic dermatitis from the second half of life to the age of 3 by month of birth. Measure.As a result, the incidence was highest in children born in October-December, 10 times higher than that in children born in April-June, which was the lowest.In addition, the number of atopic dermatitis onset until the second half of life continued until the age of three.
In addition, when the mother had a history of allergic disease, the incidence of atopic dermatitis in children was 1.69 times higher than that of the father, which was 1.18 times.Furthermore, from the data of the Japan Meteorological Agency, the relationship between the sunshine duration / humidity of the place of birth during the first 6 months of life and the incidence of atopic dermatitis was analyzed, but no scientific relationship was found.
It has been reported that children born overseas from autumn to winter have a high incidence of atopic dermatitis.This large-scale data survey has confirmed it scientifically in Japan as well.Further research is needed on the environmental factors involved in the onset of atopic dermatitis.
