Over the last few months I have finally begun sparring in boxing. A few times I have been hit in the jaw a particular way and I immediately feel my ear canal begin to feel very hot. Im sure its my jaw bumping a nerve back there, I dont feel disoriented but it is a very unusual sensation. Has anyone else experienced this, is this common or damaging. I understand that a knockout is when the jaw hits the sciatic nerve(sp?) so is this what Im experiencing. Any help would be nice.