It felt like a marble under my scalp, about two inches above my left ear
. Dr. said don't worry about it (scar tissure, benign cyst, etc.) Well, it decided to erupt one morning not long ago, for no apparent reason. All this white creamy stuff oozed out when I touched it. Then I smashed some more out. It was the consistency of toothpaste. Great, I thought. It finally popped. Wrong. This was just stage one. Although it was alot flatter, I could feel a core in it and it became very sensitive.