Linear nevoid hypopigmentation. Hypopigmentation along Blaschko's lines in narrow and broader bands (A) on the upper arm and chest of an infant (B) and thigh of a 10-year-old girl.
From: Molho-Pessach V, Schaffer JV. Blaschko lines and other patterns of cutaneous mosaicism. Clin Dermatol 2011; 29:205. Illustration used with the permission of Elsevier Inc. All rights reserved.