{Reference Type}: Journal Article {Title}: Vitamin D status in children with congenital melanocytic nevi. {Author}: Hughes CT;Dadhra J;Polubothu S;Kinsler VA; {Journal}: Pediatr Dermatol {Volume}: 41 {Issue}: 1 {Year}: 2024 Jan-Feb 28 {Factor}: 1.997 {DOI}: 10.1111/pde.15462 {Abstract}: Congenital melanocytic nevi (CMN) are rare, pigmented birthmarks that can predispose patients to melanoma of the central nervous system and skin. Data from non-CMN melanoma cohorts suggest that vitamin D levels may be connected to outcome, prompting this study of 25-hydroxyvitamin D levels in plasma samples from 40 children with CMN. While 27% were insufficient and 13% deficient, this was representative of European populations, and UK supplementation guidelines are already in place. Our data support routine vitamin D supplementation for all CMN patients during winter months, without routine serum measurement.