Adapted from:
Aguh C, Okoye G, eds. Fundamentals of Ethnic Hair: The Dermatologist's Perspective. Cham: Springer, 2016
Ogunleye TA, McMichael A, Olsen EA. Central centrifugal cicatricial alopecia: what has been achieved, current clues for future research. Dermatol Clin 2014;32:173e81.