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California wildfires caused uptick in clinic visits for atopic dermatitis, itch

Key clinical point: Air pollution from the 2018 Camp Fire in California caused an increase in visits to dermatology clinics for itch and atopic dermatitis.

Major finding: Pediatric atopic dermatitis weekly clinic visits were 1.75 times higher (95% confidence interval, 1.21-2.50) during the week of the wildfire (lag 0), compared with weeks where there was no fire, while pediatric itch visits were 2.10 (95% CI, 1.44-3.00). Pediatric atopic dermatitis clinic visits increased by 8% (rate ratio, 1.08; 95% CI, 1.04-1.12) per 10 mcg/m3 increase in PM2.5 concentration. In adults, clinic visits for atopic dermatitis were 1.28 times higher (95% CI, 1.08-1.51) during lag 0.

Study details: An analysis of how air pollution from the 2018 wildfire impacted dermatology visits at University of California, San Francisco dermatology clinics in a 2-week period in November 2018.

Disclosures: This study was funded by the University of California, San Francisco, Summer Explore Fellowship, Marguerite Schoeneman Award, and Joint Medical Program Thesis Grant.


Fadadu R et al. SID 2020, Abstract 413.