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Melasma: the imbalance between epidermal barrier and melanin barrier
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- Author:
- No author available
- Journal Title:
- International Journal of Dermatology and Venereology
- Issue:
- 5
- DOI:
- 10.3760/cma.j.issn.1673-4173.2012.05.013
- Key Word:
- 黄褐斑;表皮屏障;黑素细胞;Chloasma;Epidermal barrier;Melanocytes
Abstract： Melasma is an acquired skin disease characterized by facial hyperpigmentation of unclear pathogenesis.This paper describes the changes of epidermal barrier,melanin barrier and dermal blood vessels in melasma.On this basis,the pathogenesis of melasma is speculated to be associated with ultraviolet,cosmetics,contraceptives and other adverse stimuli,which cause epidermal barrier dysfunction,lead to a compensatory increase in melanocyte activity and melanin barrier followed by the occurrence of diseases characterized by skin pigmentation.Moreover,dermal telangiectasis is induced and vascular endothelial growth factor expression is enhanced,which accelerate skin pigmentation accordingly.
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