Linear scleroderma following Blaschko's lines.

Blaschko's lines form a pattern, which many diseases are found to follow, but linear scleroderma following Blaschko's lines is a controversial entity rarely reported in the literature. A 24-year-old man presented with multiple linear, atrophic, hyperpigmented lesions punctuated by areas of depigmentations on the left half of the trunk distributed on the anterior, lateral and posterior aspects. The lesions were distributed in a typical S-shaped line. Antinuclear antibody and antihistone antibody tests were negative. Histopathological examination of the skin from the affected area showed features suggestive of scleroderma. Here, we present a case of linear scleroderma following Blaschko's lines in a male patient--an entity reported only three times so far.