[Lichen striatus with nail abnormality is a self-limiting condition].

A six year-old boy was referred with an asymptomatic linear rash on his left arm and a nail involvement of a fingernail on his left hand. Multiple small erythematous papules coalescing into a linear band extending to the thumb with nail abnormality were noted on the left arm. A diagnosis of lichen striatus was established clinically. The condition has spontaneous remission, although the course of the disease is prolonged when nail involvement exists. The condition is benign and there is no need to perform biopsy.