TY - CHAP M1 - Book, Section TI - Normal and Pathological Skin Lesions A1 - Yashar, Sharona A1 - Haley, Jennifer A1 - Robinson-Bostom, Leslie A1 - Reid, Nianda A2 - Kelly, A. Paul A2 - Taylor, Susan C. A2 - Lim, Henry W. A2 - Serrano, Ana Maria Anido PY - 2016 T2 - Taylor and Kelly's Dermatology for Skin of Color, 2e AB - KEY POINTSPigmentary demarcation lines are normal boundaries of the skin that represent a transition between levels of melanin pigment in the skin corresponding to dermatomal innervation.Longitudinal melanonychia is a normal pattern of nail pigmentation seen in patients with skin of color. It is important to differentiate normal nail pigmentation from malignant melanocytic proliferations and extraneous pigment deposition.Physiologic pigmentation of the oral mucosa is commonly seen in patients with skin of color.Erythema dyschromicum perstans is seen more often in people with skin of color.Lability of pigment in the darker-skinned population causes dramatic changes in skin color after inflammatory processes of the skin.Many common dermatologic conditions manifest with follicular or papular lesions in dark-skinned individuals.Keloidal scarring is common in patients with skin of color. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - dermatology.mhmedical.com/content.aspx?aid=1161545149 ER -