A RECENT systematic review and meta-analysis has revealed a significant link between climate-related environmental factors and the increased burden of atopic dermatitis (AD) among adults. Drawing from 42 studies conducted across 14 countries, the research found that rises in air pollution and temperature extremes are associated with a greater number of emergency department and outpatient clinic visits for AD.
Specifically, for every 10-μg/m³ increase in ambient air pollutants such as particulate matter (PM10 and PM2.5), nitrogen dioxide, and sulfur dioxide, there was a measurable increase in AD-related healthcare visits. The association was strongest for sulfur dioxide and PM10, where the evidence was assessed as being of high certainty. Moderate certainty was found for PM2.5 and nitrogen dioxide. Additionally, exposure to temperature extremes, both hot and cold, was found to increase the severity of atopic dermatitis, prompting more medical consultations.
Other environmental factors, such as increased rainfall and higher humidity, were also linked with worsening AD symptoms, although the certainty of these findings was lower. Notably, secondhand smoke, traffic pollution, and proximity to industrial plants were probably associated with increased AD prevalence, further supporting the role of environmental irritants in aggravating the condition.
The findings underscore the growing concern that climate change and environmental pollution are not only ecological issues but also major public health threats. As the global climate continues to shift, the prevalence and severity of atopic dermatitis could rise, putting added pressure on healthcare systems and affecting quality of life for many individuals.
This research highlights the urgent need for strategies aimed at reducing pollution and mitigating climate change. Doing so may not only protect the planet but also alleviate the growing burden of environmentally triggered health conditions such as atopic dermatitis.
Reference
Park M et al. Climate conditions, weather changes, and air pollutants and atopic dermatitis: a meta-analysis. JAMA Dermatol. 2025;DOI:10.1001/jamadermatol.2025.1790.
