There are many reasons for the appearance of white patches on the body, clinically can be considered vitiligo, simple furfuraceous rash, as well as nevus pigmentosus and so on. 1. Vitiligo: this is a common pigmentation skin disease, the skin and mucous membranes will have localized pigmentation and generalized pigmentation, and a small number of itchy or sensitive to ultraviolet rays. 2. Furfura simplex: medically known as white furfura, easily appearing in children and adolescents, resulting in white patches on the body, with a layer of bran flakes. 3. Nevus aphakicus: this is a congenital non-genetic disease that tends to appear in young children, mainly in the trunk and upper limbs with limited hypopigmentation, white plaques, and generally will not expand. There are many reasons for the appearance of white patches on the body, it is recommended to go to the regular hospital in time to accept the examination, to take targeted treatment.