poliosis

poliosis
A patchy absence or lessening of melanin in hair of the scalp, brows, or lashes, due to lack of pigment in the epidermis; it occurs in several hereditary syndromes but may be caused by inflammation, irradiation, or infection such as herpes zoster. SYN: trichopoliosis. [G., fr. polios, gray]
- ciliary p. SYN: piebald eyelash.

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po·li·o·sis .pō-lē-'ō-səs n, pl -o·ses -.sēz loss of color from the hair

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po·li·o·sis (po″le-oґsis) [Gr. polios gray] circumscribed depigmentation and graying of the hair, particularly of the scalp, in association with a pathologic condition. Cf. leukotrichia.

Medical dictionary. 2011.

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  • Poliosis — is a decrease or absence of melanin in hair of the head, eyebrows, or eyelashes.It can give rise to a Mallen Streak that can be hereditary. Catherine Cookson wrote a novel and later a TV Series called The Mallen Streak where a family had the… …   Wikipedia

  • Poliōsis — (gr.), Grauwerden, Grausein der Haare …   Pierer's Universal-Lexikon

  • Poliōsis — (griech.), das Ergrauen der Haare …   Meyers Großes Konversations-Lexikon

  • Poliosis — Poliōsis (grch.), das Grauwerden der Haare …   Kleines Konversations-Lexikon

  • Poliosis — Klassifikation nach ICD 10 L67.1 Veränderungen der Haarfarbe Poliosis …   Deutsch Wikipedia

  • Poliosis — Po|li|o|sis 〈f.; , o|sen〉 Ergrauen der Haare [zu grch. polios „grau“] * * * Po|li|o|sis, die; , ...osen (Med.): das Ergrauen der Haare …   Universal-Lexikon

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  • Poliosis — Polio̱|sis [zu gr. πολιος = grau, weißlich] w; , ...o̱sen: = Canities …   Das Wörterbuch medizinischer Fachausdrücke

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