Vitiligo is a very common skin disorder in which the cells that provide colour to the skin get damaged. This results in a kind of white patches which will appear on different parts of the body. These white patches may pop up at any part of the body. Melanocytes are the cells which give colour to the skin. When these cells get damaged, skin loses the natural colour and results in vitiligo. Vitiligo may even affect the tissues inside the mouth and nose. It normally affects the parts of body where the skin is more exposed to sun.