Neuropsychiatric disorders in adults with atopic dermatitis: A population‐based cohort study

Abstract Background Atopic dermatitis (AD) may be associated with an increased burden of neuropsychiatric outcomes such as anxiety and depression, but longitudinal data on the impact of AD severity is lacking, and a comprehensive assessment of neuropsychiatric disease in adults with AD is needed. Objectives Determine risk of incident neuropsychiatric disease among adults with AD by severity. Methods A cohort study using electronic health records data from UK general practices from 1994 to 2015. Adults (≥18 years) with AD were matched on age, practice and index date to patients without AD. AD severity was categorized using treatments and dermatology referrals. Outcomes were incident anxiety, depression, bipolar disorder, schizophrenia, attention‐deficit/hyperactivity disorder (ADHD), autism, obsessive‐compulsive disorder (OCD), suicidality and completed suicide. Results Comparing 625,083 adults with AD to 2,678,888 adults without AD, AD was associated with higher risk of anxiety [HR 1.14 (1.13–1.15)], depression [1.14 (1.13–1.15)] and OCD [1.48 (1.38–1.58)] across all severities. Mild or moderate AD was also associated with higher risk of autism, ADHD, bipolar disorder and suicidality. Conclusions Atopic dermatitis is associated with a higher risk of multiple neuropsychiatric conditions, but these risks differ by specific condition and AD severity. Clinicians should inquire about mental health in patients with AD.