It is more convenient to use ultraviolet phototherapy instrument at home, so you don't have to wait in line at the hospital, but you should communicate with the phototherapist well before using it to determine the best time for your phototherapy. Like Kono's ultraviolet rays, narrow-band ultraviolet rays of 3 1 1nm are used, which is more scientific and has more or less toxic and side effects than taking medicine. That is to say, every other day, the affected area is irradiated with phototherapy instrument for about one minute at a time, and a large area is irradiated in turn, and that's it. Anyway, it is not realistic to cure in a short time. Long-term irradiation can control the disease first and then slowly return to normal skin. KN4003 in Yi Deng is only 1000 yuan, much less than taking medicine. I wish you a speedy recovery.