Is the incidence of vitiligo related to the season?

Vitiligo can occur all year round. Black and white Tongzhi reminds most patients that the onset and worsening of the disease occur in spring and summer, especially the change period between spring and summer. This period of spring is a good time to travel, and many people develop vitiligo after returning from travel. Most of the new white spots are on exposed parts such as the face, which reminds people that the main cause of the disease is related to sun exposure. At the same time, it is also common for many vitiligo patients to have the normal skin around the white spots be tanned or the peripheral skin be pigmented due to sunlight exposure in the summer, while the white spots only become red without any increase in pigment. In this way, the color tone between the white spots and the normal skin looks different. The contrast increases when it goes up, and it is mistaken for an aggravation of the condition, causing unnecessary tension. In winter, due to the weakening of light intensity and the shorter time of exposure to sunlight, people's skin color will gradually become lighter. The color difference between the lightened skin and white spots is reduced or becomes less obvious, which can easily give people the false impression that the condition is relieved or improved and ignore treatment.