So sorry to hear this. If your derm says everything is okay then I would start with massaging and some type of growth product to help you.
Many of us have had a spot that needed to be handled gently but it did grow back.
Someone on the site has suggested horsetail, jojoba oil and alove vera.
Qhemets pomade is really good
Not sure how you want to tackle it or what your pocket book is like. Others will chime in.
I have even seen some get some help with BT, the cream that is used down below for yeast infections (sorry can't remember the name).
Many of the ayurvedic oils and powders are great also. There are a lot of recommendations. Even good ole Sulpher 8.
Take care of yourself. Remember this to can go from a test to a testimony. Hold your head up.
PS: Stay away from the weaves for a while.