RT Book, Section A1 Taylor, Susan C. A1 Elbuluk, Nada M. SR Print(0) ID 1200673992 T1 Normal Variants in Pigmented Skin T2 Taylor and Elbuluk's Color Atlas and Synopsis for Skin of Color YR 2023 FD 2023 PB McGraw-Hill Education PP New York, NY SN 9781264268900 LK dermatology.mhmedical.com/content.aspx?aid=1200673992 RD 2024/03/28 AB KEY POINTSPigmented skin can have alterations in pigmentation that can be considered normal variants.These include mucosal as well as palmar and plantar macular pigmentation.Nail plates may have vertical streaks of pigmentation.Bony prominences such as elbows and knees can also have generalized darkening.Embryologic lines of development can also lead to differences in the color of the dorsal versus ventral surfaces of the skin.