Wang HL, Sun J, Qian M, et al. - This study was sought to explore the short‐term relationships between air pollution and atopic dermatitis (AD) and identify effect modifications by age and season. The Generalized Additive Model was applied to assess the short‐term effect of ambient air pollution on daily hospital visits for AD, adjusting for potential confounders. Researchers conducted subgroup analyses to distinguish potential effect modifications by season (warm and cool) and age (< 18 years and ≥ 18 years old). Between January 19 2013 and December 31, 2017, they recorded a sum of 29,972 hospital visits for atopic dermatitis in Guangzhou, China. For atopic dermatitis, air pollution might be an important trigger in subtropical Guangzhou, China. It was reported that children are more vulnerable than adults and effects are stronger in the cooler season.