Mongolian spot
Type of birthmark / From Wikipedia, the free encyclopedia
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A Mongolian spot, also known as slate grey nevus or congenital dermal melanocytosis, is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients.[2][3][4][5] It normally disappears three to five years after birth and almost always by puberty. The most common color is blue, although they can be blue-gray, blue-black or deep brown.
Quick Facts Slate grey nevus, Other names ...
Slate grey nevus | |
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Other names | Mongolian spot, Mongolian blue spot, congenital dermal melanocytosis,[1] dermal melanocytosis[1] |
Infant with slate grey nevus | |
Specialty | Dermatology |
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