Health literacy in adult patients with atopic dermatitis: a cross-sectional study

Background: Health literacy (HL) is defined as the degree to which individuals have the capacity to obtain, process, and understand health information and services needed to make appropriate health decisions. Patients with limited HL are less likely to manage chronic diseases appropriately. Objective: We sought to assess the prevalence of limited HL in patients with atopic dermatitis (AD) and its association with other patient-reported outcomes. Methods: A cross-sectional questionnaire-based study was conducted at a tertiary referral center for AD. Patients diagnosed with AD by a dermatologist between 2019 and 2021 were identified from medical records. Perception-based HL was assessed by the European Health Literacy Survey Questionnaire 16 and performance-based HL by the Newest Vital Sign. Patients completed the Patient-Oriented Eczema Measure, Dermatology Life Quality Index, and Atopic Dermatitis Control Tool to measure AD severity, quality of life, and AD disease control, respectively. Results: In total, 322 patients were included (response rate, 48.3%). On the basis of the European Health Literacy Survey Questionnaire 16, 32.4% had limited HL (8.4% inadequate and 24.0% problematic), which was associated with impaired quality of life. According to the Newest Vital Sign, 20.3% had inadequate HL, which was associated with older age. Conclusions: Up to one-third of the patients with AD showed signs of limited HL, which was associated with impaired health-related quality of life and older age. Further research should evaluate the influence of inadequate HL on health outcomes and focus on strategies to improve organizational HL to eventually enhance patient-centered care.