Could coarse hair be the result of anesthesia or damage to the hair follicle due to the surgery incision?

I had a brow lift & eye lid surgery. 3 months after surgery the hair close to the incision line has become coarse. When I use a heat iron for curls this hair becomes stiff. The hair affected is only on the top of my scalp. Hair Everywhere is just the same as before the surgery. Could this be the result of anesthesia or damage to the hair follicle due to the surgery incision? My hair was soft prior to the surgery. Now it is stiff and coarse if I use the curling iron