Question: What is (are) Lichen sclerosus ?
Answer: Lichen sclerosus is a chronic skin disorder that is more common in women, most often affecting the external part of the vagina (vulva) or the area around the anus. In men, it typically affects the tip of the penis. It can occur at any age but is usually seen in women over age 50. Some people have no symptoms, while others may experience itchiness (sometimes severe), discomfort, or blistering. It often lasts for years and can cause permanent scarring. The underlying cause of lichen sclerosus is not fully understood but it is thought to relate to an autoimmune process. Treatment may include topical steroids or other types of topical creams and/or surgery.
Source: GARD

Question: What are the treatments for Lichen sclerosus ?
Answer: How might lichen sclerosus be treated? Strong topical steroid creams or ointments reportedly are very helpful for lichen sclerosus, especially when it affects the genital areas. However, the response to this treatment varies. While itching may be relieved within days, it can take weeks or months for the skin's appearance to return to normal. Other treatments that may be used instead of steroid creams, or in combination with steroid creams, include calcipotriol cream, topical and systemic retinoids (acitretin), and/or systemic steroids. If the vaginal opening has narrowed, dilators may be needed. In rare cases, surgery is necessary to allow for sexual intercourse. The condition sometimes causes the vaginal opening to narrow or close again after surgery is initially successful. Additional information about treatment of lichen sclerosus can be viewed on Medscape's Web site.
Source: GARD