My 71 year old mother is having pain to her head, right lower side on the base of head (back). Her pain started out as a light stabbing pain that has progressed to a sharp throbbing pain. The PA stated her right ear was clear. She is not having any dental issues either. She is currently at the ER, what test should be done in order to give proper diagnosis? In addition, she has two quarter size lumps to the back of her head. The lumps are sensitive to touch and but at are not warm to touch. Could this contribute to her stabbing pain?