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.
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 depigmented areas 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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