3 weeks ago, I slipped and fell on the ice. I smacked my head really hard and was taken by ambulance to the emergency room. I was very dizzy and had a big headache. They sent me home with instructions to take it easy for a few days and rest. I was off work for four days. A week later, I was still experiencing some dizziness and minor headaches, so I saw my doctor. He sent me to get a CT SCAN...disturbed that I didn't get one in the ER. The results were fine, and he asked me to check with him if I continued with the dizziness. The area where I hit has started itching, which I thought was a good sign that it was healing. The swelling has gone down, and when I gently scratched the itch, I noticed that I have a bald spot and no feeling. I rub the area a bit, and could not feel anything, and there are little bumps all around it. I also got a headache as soon as I started scratching it. Is this normal after a head trauma? What should I do?