Atopic Dermatitis Epidemiology Highlights Lifelong Disease Burden and Diverse Clinical Trajectories
Atopic dermatitis (AD) affects approximately 129 million people worldwide, with emerging epidemiologic evidence highlighting its persistence into adulthood, diverse disease trajectories, and substantial burden across the lifespan, according to a review of recent research.
The review examined epidemiologic findings from the past decade that have expanded understanding of AD as a chronic, heterogeneous condition. Longitudinal studies have identified distinct patterns of disease onset, activity, and severity, demonstrating that AD does not follow a uniform clinical course.
“Epidemiologic studies in the last decade have been instrumental in characterizing the natural history of AD, highlighting both persistence into adulthood and the diversity of disease trajectories across individuals,” the authors wrote.
These investigations have also characterized patterns of allergic multimorbidity over time, providing insight into how AD and associated allergic conditions evolve throughout patients’ lives.
Although AD has historically been associated with childhood, increasing recognition of adult-onset disease has broadened its epidemiologic profile. Large population-based studies have demonstrated that AD remains a substantial concern beyond pediatric populations.
Older adults represent another important population. Recent evidence indicates that older individuals experience high disease prevalence and severity, emphasizing the importance of understanding AD manifestations and management needs across different age groups.
Environmental exposures may also influence AD development and progression. The review identified dietary intake, early-life antibiotic use, climatic conditions, and pollutants as factors investigated for their potential contributions to disease risk and course.
The authors emphasized the importance of understanding AD “across all ages,” reflecting growing evidence that disease onset, persistence, and severity vary considerably among individuals.
Reference
Wan J, Mestari Z, Drucker AM. Epidemiology of atopic dermatitis. J Am Acad Dermatol. 2026;94(5S):S6-S9. doi:10.1016/j.jaad.2026.01.080
