Herein I present a case of ILVEN treated by CO₂irradiation. A 7 year-old girl has had pruritic skin colored or reddish, pinhead sized papules aggregated on the right side of perianal area since her neonatal period. The pruritus got severe 2 to 3 months prior to the first visit. The pruritic lesion subsided after CO₂laser irradiation and didn't recur except for subsequent low grade hypertrophic scars until the follow-up visit one year thereafter. (Korean J Dermatol 2000;38(2)：289~291)