If the white spots appear on the body, if the surface is smooth without skin flakes, and it appears suddenly, you need to be highly alert to whether it is vitiligo, it is best to go to a regular hospital for examination, you can perform Wood’s lamp examination, dermoscopy, skin CT examination to help clarify the diagnosis. If it is vitiligo, you can give topical tacrolimus cream topically in the early stage, along with small dose of glucocorticoid orally, 308 excimer laser treatment to help the color recovery. If it is dotted small white spot, consider that it may be senile white spot, senile white spot is not need to be treated, and there is no impact on health. If the white spots appear after previous dermatitis, eczema or trauma, they are considered to be post-inflammatory hypopigmentation spots, which can be treated with local glucocorticoid creams, such as mometasone furoate cream and halometasone cream, which can be applied topically in small amounts to help restore the color.