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Medical Term:


Pronunciation: po'le-o'sis

Definition: 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.

Synonym(s): trichopoliosis

[G., fr. polios, gray]

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.