For the second time in the last two years, I have developed a lump
in my arm. This one is about 1.5" across, just above my left elbow
, palm up it is on the inside of my arm facing up. The other one started like this one and then got painful, then the muscle just went away. Now I have a divot the same size the lump
was, on my right arm, just below the elbow
, palm up on the inside of the arm. What could be causing this?