I had a fall two months ago hitting my head...resulting in large knot and cut....the knot yet smaller is still there.....my entire scalp still hurts w?

Scalp hematoma: The large knot you got when you bumped your head is called a hematoma, which is from bleeding under the skin. Often these can take quite a while to completely resolve. It is a slow steady process. It will go away eventually. The ongoing scalp pain may be as a result of superficial skin nerves being damaged. The important thing is that your brain is OK, the other things are temporary problems.