Vitiligo is a skin condition that causes loss of skin pigmentation in patches. Although vitiligo can affect any body part, it typically occurs on one’s face, hands, neck, and skin folds. Sometimes, it may also affect the eyes, mouth, wrists, fingers, and genitals. It has been estimated that about 2.8 million people nationwide develop this condition, which is believed to result from a combination of genetic and environmental causes. Here’s everything to know about vitiligo: Vitiligo signs and symptoms that should not be ignored Loss of skin color in patches Persons with vitiligo experience gradual loss of skin pigmentation, which takes place in patches. It usually shows up in skin creases and certain areas of the body, eventually spreading to other parts. Graying or whitening of one’s hair Early whitening or graying of one’s hair on the eyebrows and eyelashes, scalp, and beard is a common symptom of vitiligo. Affected mucous membranes Sometimes, vitiligo spots may develop only on the mucosal parts of one’s body, such as the inner nose, lips, and genitals. This condition is called mucosal vitiligo. Causes and triggers Vitiligo is thought to be caused by a deficiency of melanin, which is responsible for one’s skin color.