Treatment includes various skin
creams like hydroquinone, azelaic acid, corticosteroids, tretinoin cream and laser
treatment. If it still persists then you can go in for laser treatment, Chemical peeling or microdermabrasion.
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.