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vitiligo (vit·i·li·go) (vit″ĭ-li´go) [L.] a chronic, usually progressive, type of hypomelanosis in which melanocytes are destroyed, resulting in white patches on the skin that may be surrounded by a hyperpigmented border; there is an autosomal dominant predisposition to the condition, and the etiology is thought to be an autoimmune mechanism.
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Vitiligo.
depigmentation.
acrofacial vitiligo
a common type of
generalized vitiligo, with depigmentation on the face and hands.
generalized vitiligo
vitiligo over wide areas of the body surface, often distributed symmetrically, but less extensive than
universal vitiligo. See also
acrofacial v. and
v. vulgaris.
vitiligo i´ridis
depigmentation of the iris.
localized vitiligo
vitiligo in just one area of the skin.
occupational vitiligo
loss of pigment in the skin owing to contact with, ingestion of, or inhalation of certain chemicals, usually in the workplace,
such as monobenzyl ether of hydroquinone or phenol-containing compounds.
segmental vitiligo
localized vitiligo on a band of skin, often on the face.
universal vitiligo
vitiligo over all or nearly all of the body surface.
vitiligo vulga´ris
the most common type of vitiligo, in which depigmentation is in a
generalized pattern on only certain parts of the body, usually the face and hands.
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