Abstract: Objective: To evaluate the influence of climatic factors on the number of visits of children with atopic dermatitis (AD) in Suzhou. Methods: The data of AD patients diagnosed in the department of dermatology, children's Hospital of Soochow University from January 2019 to December 2019, and the climatic data in Suzhou during the same period were collected, including temperature, relative humidity, wind speed, and precipitation. Statistical software Statistical Product and Service Solutions (SPSS) analysis and Spearman correlation analysis were employed to study the relationship between climatic factors including temperature, relative humidity, wind speed, precipitation and the number of AD visits. Results: 15395 children patients, 54.3% were boys and 45.7% were girls. One to two years old children account for the most cases of patients and the visit peaks occurred in March to April of that year. The daily mean level of temperature, relative humidity, wind speed, precipitation were 18.01℃, 73.34%, 9.16 m/s and 2.48 mm. Correlation analysis showed that the number of AD visits were positively correlated with relative humidity and the effect coefficient was -0.825, which was statistically significant (P＜0.01). The correlation coefficients between the number of AD visits and air temperature, wind speed, and precipitation were 0.084, 0.231, and -0.245, respectively, all of which were not statistically significant (P>0.05). Conclusion: The number of AD visits has significant negative correlation with relative humidity, but has no significant correlation with temperature, wind speed and precipitation.

Key words: atopic dermatitis, children, climate