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piebaldism

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piebaldism /pie·bald·ism/ (pi-bawld´izm) a condition in which the skin is partly brown and partly white, as in partial albinism and vitiligo.
White Forelock
A striking focal depigmentation of hair of the anterior scalp margin, which has no clinical significance, and is typically seen in the Waardenburg syndrome, which is characterised by leukoderma, a flattened nasal bridge and cochlear deafness, see there. It may also be seen in tuberous sclerosis and Vogt-Koyanagi syndrome

piebaldism [pi´bawld-izm]
a congenital autosomal dominant pigmentary disorder of the skin due to absence of functioning melanocytes and melanin, resulting in patchy areas of depigmentation or hypopigmentation, often occurring in association with white forelock.

piebaldism
a condition in which the skin is partly brown and partly white, as in partial albuminism and vitiligo. See also waardenburg's syndrome.


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With respect to skin, there are sections on hairiness and hypertrichosis, baldness and testosterone, piebaldism, albinism, skin colour, red hair (and the polymorphisms of the melanocyte-stimulating hormone receptor, MC1R, which cause red hair), and finally supernumerary breasts.
Because the phenotype of WS resembles several other genetic and physical conditions such as albinism, piebaldism, and vitiligo, these conditions are also summarized and compared to WS in the text.
He was born with a rare genetic pigmentary disorder, piebaldism, that causes white patches on the body - including a white forelock, which Davids, ever since he can remember, has assiduously covered up.
 
 
 
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