Lichen striatus
Lichen striatus is a rare skin condition that is seen primarily in children, most frequently appearing ages 5–15.[3]: 226–27 It consists of a self-limiting eruption of small, scaly papules.It is seen as an unbroken or disrupted, linear band consisting of small tan, pink or flesh colored papules.The band of lichen striatus varies from a few millimeters to 1-2cm wide and extends from a few centimeters to the complete length of the extremity.By and large, the papules are unilateral and appear on extremities along the lines of Blaschko.