I've got a lump in the back of my neck, about two inches behind my ear and just at the base of my skull. It feels hard, and about the size of a pea. It's round, and easier to feel when I crane my neck. I don't know when it showed up, but it's been there for about a year that I know of. I asked my internist, and he shrugged, said it could be a cyst, and wouldn't do anything else for me. My neurologist suggested that it was a knot in my muscle (bullcrap I say) and to not stress out so much. I wouldn't really be concerned, but I get migraines almost everyday that start at the lump and move up behind my right eye, and then around to the other side of my head.
Besides muscle tension, a cyst, or the dreaded cancer, what the hell could this be? Should I go in and demand some images or a needle aspiration?