Epidermal nevi (EN) are proliferative epithelial diseases initially described by Von Baerensprung in 1863. The incidence rate is 1-3‰, and there is no preference for sex or race. 1 Although the etiology and pathogenesis are not completely clear, it has been reported that mutations in KRAS, PIK3CA, and FGFR3 genes are related to EN. 2,3 Verrucous epidermal nevus (VEN), also known as keratinocytic epidermal nevus (KEN), is one type of EN. The typical manifestation of VEN is yellow to tan verrucous papules or plaques with different sizes, shapes, and distributions. VEN usually occurs in infancy or early childhood, aggravating with increasing age. Lesions distribute on any part of the body, including the face, limbs, and trunk.Depending on the distribution, VEN is classified as localized VEN, systematized VEN, nevus unius lateralis, inflammatory linear verrucous epidermal nevus, and ichthyosis hystrix. 4