I have a 1" diameter lump under the skin on my tricept area. It looks like a bruise and is tender like a bruise, but I never hit that area. It has gotten a little larger and harder over the last 2 to 3 weeks. It is also getting more and more tender. I used to not notice it unless I hit it against something, like when I got in the car, but now I am starting to notice a slight pain most of the time. At first I thought it was just a deep pimple. I get those on my neck sometimes and they are painful. But I no longer think that is it. Sometimes it seems to feel warm, feverish maybe?I have to wait until after new years for my insurance to reset before I can see a doctor about it.