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J Am Acad Dermatol. 2013 Jul;69(1):40-6. doi: 10.1016/j.jaad.2013.01.010. Epub 2013 Feb 14.

Serum 25-hydroxyvitamin D concentration does not correlate with atopic dermatitis severity.

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  • 1Department of Dermatology, Division of Pediatric Dermatology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA. ychiu@mcw.edu

Abstract

BACKGROUND:

An inverse correlation between serum 25-hydroxyvitamin D concentration and atopic dermatitis (AD) severity has been suggested.

OBJECTIVE:

To determine if a statistically significant relationship exists between serum 25-hydroxyvitamin D concentration and AD severity.

METHODS:

A cross-sectional study was conducted of patients with AD who were 1 to 18 years of age. An objective Severity Scoring of Atopic Dermatitis (SCORAD) and a serum 25-hydroxyvitamin D concentration were measured for each subject. Statistical analysis was performed using appropriate univariate tests and multivariable models.

RESULTS:

Ninety-four of 97 enrolled subjects were included in the analysis. Vitamin D deficiency (25-hydroxyvitamin D <20 ng/mL) was present in 37 subjects (39%), insufficiency (25-hydroxyvitamin D 21-29 ng/mL) in 33 (35%), and sufficiency (25-hydroxyvitamin D ≥30 ng/mL) in 24 (26%). The correlation between 25-hydroxyvitamin D concentration and SCORAD was not significant (r = -0.001; P = .99). A multivariate model showed that a lower serum 25-hydroxyvitamin D concentration was significantly associated with age 3 years or older (P < .0001), black race (P < .0001), and winter season (P = .0084).

LIMITATIONS:

Limitations of this study include the inability to control for natural sunlight exposure, vitamin D intake, and AD treatment; in addition, only a single time point was captured.

CONCLUSIONS:

Serum 25-hydroxyvitamin D concentration is not significantly correlated with AD severity in our pediatric population.

Copyright © 2013 American Academy of Dermatology, Inc. Published by Mosby, Inc. All rights reserved.

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