Vitiligo is a skin problem that produces patches of white depigmentation that develop and enlarge in certain sections of the skin. The patches appear when melanocytes within the skin die off. Melanocytes are the cells responsible for producing the skin pigment - melanin - which gives skin its color and protects it from the sun's UV rays. Vitiligo can affect people of any age, race or gender. Vitiligo is not contagious and can be treated. Treatments include topical prescriptions, exposure to UVA or UVB light can help some individuals with the condition, and the newest technology includes Xtrac excimer lasers.