Hello,
From the symptoms,
lichen sclerosis is another possibility.
Lichen sclerosus is a chronic disease which effects usually the genital areas. The exact cause is not known and can be too active immune system and hormone problems.
Some people have also proposed a genetic and hereditary basis of disease. Treatment consists of strong cortisone cream or ointment on the skin. Other treatment options include Retinoids, vitamin A-like drugs, Tacrolimus ointment and Ultraviolet light treatment.