Vitiligo occurs when melanocytes, which are the cells which produce melanin, either fail to make melanin or if they are dead. Melanin is the pigment which lends color to the skin, hair and eyes. <br /> <br />Vitiligo: Types, Causes, Symptoms, Investigations, Treatment, Surgery, Self Measures <br />http://www.epainassist.com/skin/vitiligo
