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Photodermatoses in the Pigmented Skin

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Ultraviolet Light in Human Health, Diseases and Environment

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 996))

Abstract

Skin colour (specifically in relation to its melanin content and composition) has a marked influence on its interaction with ultraviolet light. Eumelanin has mainly photoprotective properties while pheomelanin has the ability to cause formation of reactive oxygen species. This difference is responsible for the difference in incidence and presentation of various idiopathic photodermatoses in dark skinned patients compared to those with lighter skin types. Certain conditions are peculiar to darker skins including pin point popular variant of polymorphous light eruption. These differences are discussed in this chapter while also highlighting the challenges faced in performing phototesting in patients with dark skin.

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Authors and Affiliations

  1. Department of Dermatology and Venereology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India

    Vinod Kumar Sharma M.D., FAMS & Kanika Sahni M.D.

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  1. Vinod Kumar Sharma M.D., FAMS
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  2. Kanika Sahni M.D.
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Correspondence to Vinod Kumar Sharma M.D., FAMS .

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  1. Faculty of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom

    Shamim I. Ahmad

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Sharma, V.K., Sahni, K. (2017). Photodermatoses in the Pigmented Skin. In: Ahmad, S. (eds) Ultraviolet Light in Human Health, Diseases and Environment. Advances in Experimental Medicine and Biology, vol 996. Springer, Cham. https://doi.org/10.1007/978-3-319-56017-5_10

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