Early treatment should be taken to prevent permanent atrophy. We must minimize the exposure to sunlight or ultraviolet rays, and take measures to prevent ultraviolet rays when going out.

1. Local drug therapy

① topical corticosteroids; ② topical tacrolimus; ③ Cryotherapy with liquid nitrogen or dry ice.

2. Oral method

(1) antimalarial drugs, such as chloroquine, can stabilize lysosomal membrane from light, prevent platelet aggregation and adhesion, and decrease after the condition improves; ② Tripterygium wilfordii preparation, etc. ③ Oral glucocorticoid.