About three weeks ago I noticed a small tender place on my scalp (about 3" back from my hairline, midline - or very close...). It felt - and still feels - as if I hit my head on something very sharp - but I have not bumped my head. There is no bruising, raised or sunken areas. There is no discoloration or hairloss at the site. The site is mildly tender w/o touch, but when I touch (barely touch) a very small area with the tip of my finger, I experience intense pain, nausea, tingling across my nose and down my cheeks. After the tingling subsides - about 5 seconds - my forehead aches and I feel "tight" and midly ache across my nose. I also experience pain that subsides and returns in about 3 minute cycles at the back of my head. These symptoms last about an hour or so after touching the sore spot.
Please help if you can.