Subject and method: 52 lichen sclerosus (LS) patients, 48 women and four men, 34 patients over 30 years old, severe level 17 patients (32.69%), moderate level 32 patients (61.54%), mild level 3 patients (5.77%) were treated at the National Hospital of Dermatology and Venereology and Bach Mai Hospital from 1/2016 to 12/2018.