Vitiligo is a long-term problem in which patches of skin undergoes discolouration. It can affect people of any age, gender and ethnic group. Melanocytes are the cells responsible for producing skin pigment called melanin, which gives skin its colour and protects it from UV rays. Vitiligo patches start to appear when melanocytes die off within the skin. Vitiligo is not contagious and is caused due to an autoimmune disorder. Vitiligo treatments include exposure to UVA and UVB to skin depigmentation in some severe cases.