Derm Dx: A linear lesion on the anterior frontal scalp

A 45-year-old patient from Mexico presents for a routine physical exam. She points to a lesion on her anterior frontal scalp and hairline. Several years ago, the lesion started on the frontal scalp and progressed down her forehead.

The lesion is stable and has not changed or progressed for at least two years. She is otherwise healthy. A complete head-to-toe skin ...