
According to source, Vitiligo [vit-ill-EYE-go] is a disorder in which white patches of skin appear on different parts of the body. This happens because the cells (called melanocytes [ma-LAN-o-sites] that make pigment (color) in the skin are destroyed.
Health experts consider vitiligo as an autoimmune disease with unknown cause. White patches on the skin are the main sign of vitiligo and such patches are commonly visible to skin areas that are mostly exposed to sunlight such as the hands, feet, arms, face, and lips. The disorder affects all races and both sexes equally. Although it is categorized as hereditary, not all children who’s parents having the disorder are more likely to develop vitiligo.
Is the disease curable? Medical Science says yes. But as to what have had happen, this is definitely not the prime cause of the pop star's sudden departure.