People with dark skin are at a greater risk of suffering from this skin ailment. If the treatment is started early, the prognosis is good. Treatments vary from topical applications to internal medicines and even radiation therapy. The common area of occurrence of white patches are lips, face, feet, arms and hands. There can be other parts of the body that may develop white blotches as well. These are the eyes, navel, groin, genital area, nostrils, armpits, rectal area and mouth.