Unilateral Blaschkoid lichen planus involving the entire half of the body, a unique presentation.

A large number of congenital as well as acquired skin disorders assume a characteristic morphological pattern following the Blaschko lines. Lichen planus (LP) is an acquired inflammatory disorder that can come with different faces. Linear lesions are frequently seen but cases of zonal (zosteriform) or whorled appearance have rarely been described in the literature. We describe an even rarer presentation in a 30-years-old man who had unilateral pruritic violaceous lesions over right half of body characteristically following lines of Blaschko with clinical and histological morphology typical of LP.