Adult onset verrucous epidermal nevus

Epidermal nevi are hamartomas of the skin and have multiple clinical varian ts, including a verrucous type. Usually verrucous epidermal nevi present at an early age, are found on the lower extremities, have a female predominan ce, and are refractory to treatment. Only very rarely do verrucous epiderma l nevi have an adult onset. We describe a 60-year-old woman with a 5-year h istory of multiple verrucous plaques on her face, scalp, and neck. Histolog ic examination revealed the characteristic findings of verrucous epidermal nevus. This is the oldest patient reported with an adult onset verrucous ep idermal nevus.