Is it vitiligo that a white spot grows on the child's ass and itches?

vitiligo, also known as "white wind", is named "vitiligo" because it has no fixed place to live and has the characteristics of wind evil. It is an acquired depigmentation skin disease. The tyrosinase activity in melanocytes in skin and hair follicles decreases due to the mutation of susceptible genes in cells and the lack of trace elements such as copper ions, which leads to the reduction or disappearance of melanocyte synthesis, thus causing localized or generalized depigmentation and forming white spots. I remember that the New Theory of Vitiligo said this.

I suggest that you first observe whether the surface of leukoplakia is smooth and dandruff-free, and the leukoplakia is pale white or milky white. If the boundary is blurred or spreads to normal skin, it may be vitiligo, and the specific situation needs to be diagnosed. Vitiligo is a refractory disease, and its prominent feature is that it is easy to spread, especially affecting beauty and life.