Proper sun exposure can promote the recovery of vitiligo patients, promote the production of melanin, and accelerate the transfer of melanin from melanocytes to all layers of epidermis, thus deepening skin color.
However, in the light waves of the sun, there are also parts that will damage the health of the skin. Prolonged exposure to the sun can cause sunburn. Melanin has the function of resisting ultraviolet damage. When exposed to ultraviolet rays for a long time, melanocytes will secrete melanin desperately to protect the skin, which will lead to early apoptosis caused by hyperfunction of melanocytes, and melanin can no longer form normally!
Melanin can't be formed, and the skin can't be colored, forming white spots! Therefore, long-term exposure to the sun, or exposure to strong sunlight, will only aggravate the spread of white spots, which will easily lead to the patient's condition becoming more and more serious.
There is no specific treatment for vitiligo, and the treatment methods include drug treatment, irradiation and transplantation. Among them, phototherapy can stimulate the growth of melanocytes, activate melanin, and restore vitiligo from its roots. So many people choose to use American 308 excimer laser treatment. However, patients must distinguish the essential difference between sunlight and 308nm excimer laser in the United States, and do not blindly bask in the sun.