In very small percentage of cases vitiligo may go away on its own , but for most people the condition gets worse slowly affecting more and more area . Proper treatment can help return the normal color to the skin . Options include topical applications, light therapy and surgical grafting along with vitamin supplements.
Vitiligo being an autoimmune disease, blood tests are done to rule out presence of other common autoimmune diseases. There is no real way to tell if vitiligo will progress or not however the treatments available may help to arrest new spots from developing.