Concerns After Brow Lift, Midface Lift, and Eyelid Surgery

Dear GRod
Hematomas happen. A Hematoma is a collection of blood under skin. There is often significant bruising associated with the process as well. It is a risk of having any surgery. They can profoundly delay healing so your doctor did the right thing and acted to control the hematoma.
So it is not surprising that your healing process is sputter along. You will get there but it takes much longer under these circumstances.
The muscle paralysis you are describing can be permanent if the nerves were damaged during surgery. However, the bruising and swelling associated with the hematoma can be associated with motor nerve dysfunction that slowly resolved as the swelling goes down. This can take place over several months. However, in my experience, whatever function has not returned in 6 months represents a permanent deficit. With the forehead lift these types of motor deficits can be relatively subtle even if the weakness does not recover.
As noted by others, some degree of hair root shock is common around the incisions used for the forehead lift. Typically, the hair begins to regrow at these sites after a few months. I have never had a person require scar revision for one of these incisions. Over time they tend to do quite well.
Honestly, I am not sure that seeing the neurologist will do you a bit of good. Mostly, you need time to heal. Three weeks is a very short time frame.

It is early to tell if any of the changes you describe are permanent, but to put you at ease MOST ARE NOT. Muscle weakness recovers in the majority of patients, but may take weeks to months. A little blood under the skin will also go away with time as well.
As for your hairline. The hair follicles are often "shocked" by and incision in the scalp and may take a few months to recover as well.

 Usually the swelling takes a few weeks to go down after a hematoma. The dents will go away. Usually the forehead paralysis will resolve in several weeks to months.