According to recent epidemiological research, the prevalence of atopic dermatitis in adults in the United States is around 7%. One in every four individuals with atopic dermatitis develops the illness as an adult. Adult-onset atopic dermatitis differs from child-onset atopic dermatitis in terms of risk factors, lesional distribution and shape, accompanying symptoms, genetics, and comorbidities. Atopic dermatitis of adulthood is a clinical diagnosis that must be differentiated from other entities in the differential diagnosis, such as allergic contact dermatitis and cutaneous T-cell lymphoma. 

More study is needed to better understand the aetiology of adult-onset/recurrent atopic dermatitis and the best treatment methods.

Reference:https://link.springer.com/article/10.1007/s40257-019-00453-7