Key clinical point: Patients with atopic dermatitis (AD) vs. healthy controls had significantly lower levels of serum 25-hydroxyvitamin D (25[OH]D), with the levels even lower in patients with severe vs. mild/moderate AD. Supplementation with vitamin D helped improve AD symptoms.
Major finding: The mean serum 25(OH)D level was significantly lower by 7.42 ng/mL in patients with AD vs. healthy controls and by an average of 7.99 ng/mL and 2.95 ng/mL in patients with severe vs. mild and moderate AD, respectively (all P < .001). Over a weighted mean of 2.88 months, patients receiving vitamin D supplementation at a weighted mean dose of 1,721 IU/day reported improvement in AD symptoms ( P < .001).
Study details: Findings are from a meta-analysis of 20 studies with 1,882 cases of AD.
Disclosures: This study did not receive any funding. The authors declared no conflict of interests.
Source: Ng JC and Yew YW. Effect of vitamin D serum levels and supplementation on atopic dermatitis: A systematic review and meta-analysis. Am J Clin Dermatol. 2022 (Mar 5). Doi: 10.1007/s40257-022-00677-0