Hair loss on sides and back of the head after a hair transplant (photo)

I belieeve that you are addressing the hair loss on the sides and in the back that are shown in the photo shown by the arrows. I have never seen this type of loss outside of the transplanted area and in areas (particularly the side) where the hair is usually permanent. Time will tell (6 months) if this is the result of the anesthetic or not. .A biopsy, at some point in time, may be a reasonable thing to do by a good dermatologist? who should be managing the problem