We don’t know exactly what causes it. Immune system disturbances and hormonal problems may be the cause. It is also believed that people inherit the likelihood of the disease.
It appears sometimes on damaged or injured skin. Skin infections such as HPV, herpes etc. may also cause it.
Lichen Sclerosus is related to other autoimmune diseases such as scleroderma, lichen planus, vitiligo and alopecia areata. Lichen Sclerosus is not contagious but the affected skin is more likely to develop skin cancer.