Dec 10, 2009
I have this large lump under my skin on my butt by my thy, for about a month. Its very painful especially when I sit. There used to be pimples there but they went away and now I have this hard ball like lump under my skin, but u can't see it except there is some discoloration like a pimple. its like the size of a marble and it hurts. What is this? Should I get it checked out? Should I see if it goes away?