Ethnic-type pigmentation

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 Editor: Luc Thomas

Author(s): Luc Thomas, Amélie Boespflug
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Author(s) Luc Thomas · Amélie Boespflug
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Status update June 25, 2018
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Ethnic-type pigmentation is also often a polydactylic condition and family history helps in its diagnosis. As it predominates on the right hand in right-handed patients (and the opposite in left-handed) and occurs in darkskinned persons, it is likely that it could also correspond to some kind of repetitive trauma-induced pigmentation. Nevertheless, the dermoscopic aspect is similar, involving a grayish subtle dermoscopic pigmentation.