Thanks for the query.
Post traumatic scars resulting in hair loss and irregularities in skin contour is a common problem. Natural re-pigmentation sometimes occurs slowly. In case there is scarring and fibrosis, medical management by intralesional steroid may help. Skin texture will respond beautifully to fractional CO2 laser. It may take a couple of sessions, may be 5-6 over a period of few months for a good appreciable result. There is a down time with the procedure and one can experience redness and swelling on the treated area, that will persist for 3-5 days post procedure.
It would have been better if you would have attached a clinical photograph, so that the lesion could appreciated properly.
Next Steps
Your dermatologist will decide a treatment plan for you after a consultation.