What disease is white plaque on the skin

Vitiligo is a depigmentation of skin, mucous membranes and hair caused by a marked reduction or absence of melanocytes. The causes of vitiligo are complex, including autoimmune theory, melanocyte self-destruction theory, neurochemical factor theory, genetic factors, trace element changes and mental factors, microcirculation disorders, diet, emotions, tobacco and alcohol, drug stimulation, mechanical stimulation, surgery, trauma, and so on. Because vitiligo has many inducing factors, so in the treatment of vitiligo, first of all to check the cause of vitiligo, in order to symptomatic treatment, if blind medication, not only no effect, but also may cause allergies and other adverse reactions.