Vitiligo (vit-ih-LIE-go) is a disease that causes the loss of skin color in blotches. The extent and rate of color loss from vitiligo is unpredictable. It can affect the skin on any part of your body. It may also affect hair and the inside of the mouth. Normally, the color of hair and skin is determined by melanin.

More than 200,000 US cases per yearVitiligo occurs when pigment-producing cells die or stop functioning.Loss of skin color can affect any part of the body, including the mouth, hair, and eyes. It may be more noticeable in people with darker skin.Treatment may improve the appearance of the skin but doesn’t cure the disease

Source: Mayo Clinic and others.