Patients with white skin at the corners of the mouth, consider the following aspects: 1, secondary hypopigmentation: some people have a little hair pale white at the edge of the lip red, often not vitiligo, a more common situation is secondary hypopigmentation, often and lips, lips around the skin inflammation has a relationship. 2, chloasma around the mouth: some people have chloasma around the mouth, so it appears that the skin at the edge of the lip red is relatively white. 3, vitiligo : In the edge of the lips, the corner of the lips appeared porcelain white white spot, round, oval, and the white spot on the sweat hair appeared white, not accompanied by itching, pain, can be tested by dermatology Wood lamp, judged to be vitiligo. Therefore, for the skin whitening at the corners of the mouth, patients can be advised to go to the dermatology department to ask for a doctor’s interview for Wood’s lamp detection. Please don’t panic, go to the hospital in time to find a professional dermatologist for consultation and treatment.