There is a difference between white patches of skin and vitiligo, white patches of skin usually refers to a symptom, vitiligo is a disease of the skin and mucous membranes, the clinical manifestation of skin pigmentation loss or (and) white hair. White patches of skin can be seen in vitiligo, pigmentless nevi, anemic nevi, etc., but also in primary diseases, such as eczema, dermatitis, psoriasis, etc. after the inflammation, the primary disease lesion areas of limited hypopigmentation. Vitiligo is acquired, no gender differences, any age can develop, children and young adults are more common, any part can be involved. Vitiligo clinical manifestation of skin mucous membrane white spots, often involved in the head, face, hands and other exposed parts, is a common loss of appearance of the disease. When the skin appeared white, you should go to the hospital in time, clear the cause of the disease to give targeted treatment.