Vitiligo is not contagious, the onset of vitiligo is mainly related to genetics, autoimmunity, self-destruction of melanocytes, mental factors, and copper deficiency of trace elements. In addition, other stimuli, such as burns, sunburn, radiation, chemicals, infections, etc. can also induce the onset of the disease. This disease can occur at any age, but mostly in young people, nearly half of the patients within 20 years of age onset, there is no significant difference between male and female onset. The most common type of vitiligo is vitiligo, which can be combined with other autoimmune diseases, such as chronic anemia, thyroid disease, diabetes, ulcerative colitis, etc. The types of vitiligo can be divided into limited, disseminated, pancystic, limbic and segmental types, usually segmental and limbic types are more difficult to treat, while limited and facial lesions have a slightly higher cure rate.