Vitiligo is not contagious.
Vitiligo is only a depigmented patch of skin caused by a decrease in the number and function of melanocytes and is rarely accompanied by abnormalities in other parts of the body. Although the cause of melanocyte destruction in vitiligo is not known, there is no evidence to support that bacterial or viral infections cause the disease, so vitiligo is not contagious. In addition, an infectious disease that needs to be distinguished from vitiligo is leprosy. Leprosy patients can also appear on the skin some similar to vitiligo-like depigmentation, but the appearance of this white spot is often accompanied by the body surface skin numbness and other shallow sensory nerve dysfunction, abnormal sweating, loss of eyebrows and sweat hair, lion-like face and even limb disability deformity and other manifestations. Leprosy is contagious, close living contact and air droplets can cause leprosy infection. The two diseases vitiligo and leprosy are completely different and should not be confused.