Hello,
For these dots the possibilities of lichen sclerosus and vitiligo should be ruled out. 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
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.
I suggest you to get an evaluation done from a dermatologist to confirm the diagnosis.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.