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Vitiligo

Definition:

Vitiligo is a skin condition in which there is loss of pigment (color) from areas of skin, resulting in irregular white patches that feel like normal skin.

Causes, incidence, and risk factors:

Vitiligo appears to be an acquired condition and may appear at any age. There is an increased incidence in some families. Vitiligo is more noticeable in darker skinned people because of the contrast of white patches against dark skin.

The cause of vitiligo is unknown, but autoimmunity may be a factor. This condition affects about 1% of the U.S. population.

Lesions appear as flat areas with no pigment and with a darker boarder. The edges are sharply defined but irregular. Frequently affected areas are the face, elbows and knees, hands and feet, and genitalia.

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