First, vulvar lichen sclerosus is not cancerous. Vulvar lichen sclerosus is a general term that can be divided into many types, and the cause of the disease is unknown. The main symptoms include itching, atrophy, and whitening of the vulva. Because of vulvar itching, long-term scratching can lead to local skin thickening, cracking, and a certain risk of cell degeneration and malignancy. When vulvar lichen sclerosus occurs, patients need to visit a hospital for a colposcopy to rule out precancerous lesions. The usual treatment focuses on symptomatic relief, primarily to alleviate itching. If the itching is severe or if the treatment with medication is ineffective, photodynamic therapy can be used, which also has good effects.