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Related Concept Videos

Pigmentation01:19

Pigmentation

2.4K
The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
2.4K

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Updated: Jul 4, 2025

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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Violaceous lunula with pigmented longitudinal ridge

Rodolfo Valentini1, Aziz Khan2, Michael Murphy2

  • 1University of Connecticut School of Medicine, Farmington, Connecticut.

JAAD Case Reports
|January 31, 2024
PubMed
Summary

No abstract available in PubMed .

Keywords:
cracked nailglomus tumorhistopathologyimmunohistochemistryleiomyomalongitudinalnail tumorspiradenomasquamous cell carcinomasubungual exostosis

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