A 1-day-old boy presented for evaluation of erythematous atrophic macules and papules on his cheeks and extremities and Blaschkoid lesions on his trunk (Figure 1 and Figure 2). He was born to a 27-year-old gravida 1, para 0, woman at 41 weeks' gestation after a pregnancy that was complicated by pyelonephritis. His family history was unremarkable and without any evidence of consanguinity.
Quain RD, Militello G, Junkins-Hopkins J, Yan AC, Crawford GH. Erythematous Atrophic Macules and Papules Following the Lines of Blaschko. Arch Dermatol. 2007;143(1):109-114. doi:10.1001/archderm.143.1.109-c