The initial symptoms of lichen planus can appear on the surface of the skin as flat, purplish-red papules, and some of the papules can fuse into plaques, forming the expression of deepened furrows and elevated skin ridges. If trauma occurs during the progressive stage, the rash can develop into lichen planus on the traumatized part, and itching can also occur. If the itching is more intense, blisters, vesicles and oozing can also appear. Usually in clinical treatment, you can take oral compound glycopyrrolate tablets 3 times a day, 2 tablets a time, and apply topical fluticasone propionate ointment once a day for treatment.