I was in a car accident and severed some nerves in my forehead. It's still numb but gets shooting pains and itches. Signs of nerve healing?

Tingling. Tingling, itching, burning, sharp pains- these are the sensations nerves undergo. If this occurs after numbness, perhaps it indicates some nerve regeneration. Hang in there- perhaps this is a good sign!
Possibly. Depends upon how long ago this occurred, but nerve regrowth is often heralded by odd neurologic sensations.