I have had a deep tissue lump on my back for a few years, but it has never hurt. The last week it has emerged, no head to it, it is about 1/2 inch high and the diameter of a quarter, red and very painful. I was thinking maybe a boil, but it does not have a head to it.
His. Better to get it inspected by doctor to decide whether to treat with medicines or to take it off. Take care.