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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.
The Mongolian spot is a congenital developmental condition exclusively involving the skin. The blue colour is caused by melanocytes , melanin -containing cells, that are deep under the skin. [ 6 ] Usually, as multiple spots or one large patch, it covers one or more of the lumbosacral area (lower back ), the buttocks , sides, and shoulders . [ 6 ]
Mongolian as a term for race was first introduced in 1785 by Christoph Meiners, a scholar at the then modern Göttingen University.Meiners divided humanity into two races he labeled "Tartar-Caucasians" and "Mongolians", believing the former to be beautiful, the latter to be "weak in body and spirit, bad, and lacking in virtue".
Mongolian spot (congenital dermal melanocytosis, dermal melanocytosis) Mongolian spot; Mulberry molar; Nager acrofacial dysostosis; Nasal glioma (brain-like heterotopia, cephalic brain-like heterotopia, glial hamartoma, heterotopic neuroglial tissue, nasal cerebral heterotopia, nasal heterotopic brain tissue) Nasolacrimal duct cyst; Nevus ...
Stork bites occur in a significant number of newborns, with estimates ranging from 22–40 percent [2] to 40–70 percent; [3] they are reported more frequently for white babies than for infants of other races. [2] They result from a dilation of capillaries in the skin, [3] and may become darker when the child cries or strains. [4]
A high-arched palate (also termed high-vaulted palate) is where the palate is unusually high and narrow. It is usually a congenital developmental feature that results from the failure of the palatal shelves to fuse correctly in development, the same phenomenon that leads to cleft palate. [1]
The Caucasian race (also Caucasoid, [a] Europid, or Europoid) [2] is an obsolete racial classification of humans based on a now-disproven theory of biological race. [3] [4] [5] The Caucasian race was historically regarded as a biological taxon which, depending on which of the historical race classifications was being used, usually included ancient and modern populations from all or parts of ...
Sinodonty is a particular pattern of teeth characterized by the following features: The upper first incisors and upper second incisors are shovel-shaped, and they are "not aligned with the other teeth". [11] The upper first premolar has one root, and the lower first molar in Sinodonts has three roots (3RM1). [11] [5]