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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.
It should not be confused with Mongolian spot, which is a birthmark caused by entrapment of melanocytes in the dermis but is located in the lumbosacral region. Women are nearly five times more likely to be affected than men, and it is rare among Caucasian people. [6] Nevus of Ota may not be congenital, and may appear during puberty.
PHACES Syndrome, a rare condition that often involves brain, heart, and arterial abnormalities, is generally accompanied by the presence of large facial hemangiomas. In such cases, what appears to be a small bruise or birthmark may grow rapidly and take on a puffy appearance in the first days or weeks of life.
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Congenital nevus. Note the variable coloration and slightly irregular border. The congenital melanocytic nevus appears as a circumscribed, light brown to black patch or plaque, potentially very heterogeneous in consistency, covering any size surface area and any part of the body.
Naegeli–Franceschetti–Jadassohn syndrome (NFJS), also known as chromatophore nevus of Naegeli and Naegeli syndrome, [1] [2] is a rare autosomal dominant [3] form of ectodermal dysplasia, characterized by reticular skin pigmentation, diminished function of the sweat glands, the absence of teeth and hyperkeratosis of the palms and soles.
AKRON - The photo of Jenna and Jillian Thistlethwaite holding hands just after birth drew worldwide attention. Six months later, the twins are thriving and the global attention has died down, but ...
Jennifer Garner Shares Rare Childhood Photos With Lookalike Sisters. Jacqueline Burt Cote. January 29, 2025 at 5:02 PM. ROBYN BECK/Getty Images.