Vitiligo is an autoimmune skin condition. It is unclear what causes vitiligo. Scientists believe several factors cause it such as genetics, bacterial overgrowth, food sensitivities, nutritional deficiencies, accumulation of toxins, mental or emotional anxiety. The immune system attacks the melanin-producing cells known as melanocytes, and this process causes areas of the skin to reduce their pigmentation. Learn about Vitiligo in this video.