Epidemiology of atopic dermatitis in adults: Results from an international survey.
2018
Barbarot, Sébastien | Auziere, S | Gadkari, A | Girolomoni, G | Puig, L | Simpson, E L | Margolis, D J | de Bruin-Weller, M | Eckert, L
Background:There are gaps in our knowledge of the prevalence of adult atopicdermatitis (AD).Objective:To estimate the prevalence of AD in adults and by disease severity.Methods:This international, cross-sectional, web-based survey was performed inthe United States, Canada, France, Germany, Italy, Spain, United Kingdom, andJapan. Adult members of online respondent panels were sent a questionnaire forAD identification and severity assessment; demographic quotas ensured populationrepresentativeness for each country. A diagnosis of AD required subjects to be posi-tive on the modified UK Working Party/ISAAC criteriaandself-report of ever hav-ing an AD diagnosis by a physician. The proportion of subjects with AD whoreported being treated for their condition was determined and also used to estimateprevalence. Severity scales were Patient-Oriented SCORAD, Patient-OrientatedEczema Measure, and Patient Global Assessment.Results:Among participants by region, the point prevalence of adult AD in the over-all/treated populations was 4.9%/3.9% in the US, 3.5%/2.6% in Canada, 4.4%/3.5% inthe EU, and 2.1%/1.5% in Japan. The prevalence was generally lower for males vsfemales, and decreased with age. Regional variability was observed within countries.Severity varied by scale and region; however, regardless of the scale or region, propor-tion of subjects reporting severe disease was lower than mild or moderate disease.Conclusions:Prevalence of adult AD ranged from 2.1% to 4.9% across countries.Severe AD represented a small proportion of the overall AD population regardlessof measure or region.
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