5 months ago, white spot appeared at the back of the neck. At present, there is no expansion. White

If your neck white spot and surrounding tissue boundaries are clear, and there is no itching, pain, redness, desquamation and other symptoms, generally considered vitiligo. Patients can go to the hospital to do Wood lamp examination for a clear diagnosis. After diagnosis, patients can take immune-enhancing drugs as prescribed, while ensuring adequate sleep to improve body immunity. When going out, do a good job of local skin sunscreen, do not eat foods rich in vitamin C.