Linear nevoid hypertrichosis without underlying hypopigmentation or extracutaneous abnormalities.

An 8-year-old Caucasian girl presented with a linear patch of excessive hair growth involving her left posterolateral leg without any underlying hypopigmentation or associated abnormalities. This is an unusual presentation given that the literature describing nevoid hypertrichosis in a linear distribution is associated with either underlying skin or hair hypopigmentation or other extracutaneous manifestations.