Granuloma gluteale infantum may be considered a complication oi the primary irritant type of diaper dermatitis and a modern disease due to the change in tae are of the napkin area. Most patients were infants who had worn plastic diapers and were treated with fluorinated topical corticasteroid cream for their diaper dermatitis. The lesions comorise one or several, soft and reddish brown or livid purple nodules on the napkin area. We report a typical case of granuloma gluteale infantum in a 13-month old female who had been treated with topical cortieosteroid crearn for her diaper derniat;lis. The granuloma regressed spontaneously after withdrawl of the topical corticosteroid and restricted use of the occlusive plastic diaper. (Kor J Dermatol 1093; 31(2): 228-231)