| piebald eyelash | An isolated bundle of white eyelash's among normally pigmented eyelash's. Synonym: canities circumscripta, ciliary poliosis, poliosis. (05 Mar 2000) |
|---|---|
| piebald skin | Patchy absence of the pigment of scalp hair, giving a streaked appearance; patches of vitiligo may be present in other areas sue to absence of melanocytes; often transmitted as an autosomal dominant trait and may be associated with neurological defects or eye changes . Compare: Waardenburg syndrome. Synonym: piebald skin, piebaldism. (05 Mar 2000) |
| piebaldism | Autosomal dominant, congenital disorder characterised by localised hypomelanosis of the skin and hair. The most familiar feature is a white forelock presenting in 80 to 90 percent of the patients. The underlying defect is possibly related to the differentiation and migration of melanoblasts, as well as to defective development of the neural crest (neurocristopathy). Piebaldism may be closely related to waardenburg's syndrome. (12 Dec 1998) |
| piebaldness | Patchy absence of the pigment of scalp hair, giving a streaked appearance; patches of vitiligo may be present in other areas sue to absence of melanocytes; often transmitted as an autosomal dominant trait and may be associated with neurological defects or eye changes . Compare: Waardenburg syndrome. Synonym: piebald skin, piebaldism. (05 Mar 2000) |