Vitiligo is a condition characterized by loss of skin pigmentation resulting in white patches. While its exact cause is unknown, it is considered an autoimmune disease where the immune system attacks melanocytes. There are different types of vitiligo that may have different origins or causes. The most common forms seem related to an immune disorder causing antibodies against melanocytes. Stress, infections, and toxic compounds may also play an indirect role. Vitiligo affects nearly 100 million people worldwide and prevalence varies greatly between countries.