Vitiligo is a pigmentation disorder in the human skin. The human skin contains special skin cells (melanocytes) that produce the pigment melanin which colors the skin.
In Vitiligo, the special skin cells (melanocytes) as well as the tissues (mucous membranes) that line the inside of the mouth, nose, genital and rectal areas, and the retina of the eyes are destroyed. As a result, white patches of skin appear on different parts of the body. The hair may also turn white that grows in areas affected by vitiligo.
What causes vitiligo?
There are several theories regarding the cause of vitiligo but the actual cause is not fully known. According to one theory, people with vitiligo develop antibodies that, turn upon them and destroy their own melanocytes instead of protecting them. There is another theory according to which the melanocytes somehow attack and destroy themselves. Finally, some people with vitiligo have reported that a single event such as severe sunburn or an episode of emotional distress is the main cause of this order. Scientifically, events of this nature have not been accepted as the main cause of vitiligo. These are merely coincidences.