There are various causes of white spots: 1. Consider idiopathic punctate white spots. This white spot is about the size of a soybean, is flat, has no itching sensation, and can be left alone.2. Sweat spots. Sweat spots are mainly caused by fungal infections and need to be tested for fungus before treatment. If it is positive, you can use naftifine ketoconazole cream and terbinafine hydrochloride ointment externally.3, vitiligo. The cause of vitiligo is unclear, it can be neurological factors, immune factors, or melanocyte self-destructive factors, you can use tacrolimus ointment, compound kalizan tincture or 308 laser irradiation treatment.4, simplex furfura, which mainly occurs in the face, you can orally levocetirizine hydrochloride tablets, topical zinc oxide boric acid ointment, while in the life of the living, to avoid spicy and stimulating diet, avoid drinking alcohol, prohibit the use of alcohol, Salt water, vinegar and other external washing.