Adults with white patches on the face are considered to be related to furfuran, psoriasis, vitiligo and other causes. 1. Furfury simplex: prolonged sun exposure or vitamin deficiencies can cause furfury simplex, which can lead to white patches on the face, and the surface of the white patches will be accompanied by scales with unclear borders. 2. Psoriasis: When psoriasis occurs, white patches appear on the facial skin and may be accompanied by itching. Since psoriasis is difficult to treat, it is recommended to consult a doctor as soon as possible. At the same time, it is recommended to stay away from toxic substances, avoid eating fish, shrimp and other seafood, and avoid scratching the affected skin. 3. Vitiligo: It is a pigment loss skin disease. Vitiligo can lead to the appearance of facial skin white patches with clear borders, and white patches are porcelain white, and white patches of hair will also appear white. Once the face of the abnormal white spots, should be vigilant, as soon as possible to the hospital to do a detailed examination, clear cause, easy in the doctor’s guidance for targeted treatment.