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Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand. vasanop@gmail.com
The dyschromatoses are a group of pigmentary disorders characterized clinically by mixed and often guttate hypopigmented and hyperpigmented lesions. There are many conditions that present with dyschromatosis, including genodermatoses, inflammatory skin diseases, infections, drug and chemical use, and nutritional disorders. Some conditions have extracutaneous features. Poikiloderma (a combination of hypo- and hyperpigmentation with telangiectasia and atrophy) must be excluded. In this article, we describe the dyschromatoses typically presenting in infancy and childhood, most of which are genodermatoses. The approach we have taken in classifying them is based on organ involvement. We hope this article will serve as a guide for dermatologists to the recognition of these uncommon conditions.
© The Author(s). CED © 2011 British Association of Dermatologists.
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