I have a large swollen area on the right side of my neck. It is just above my collarbone, and about four inches from the center of my throat. If I was a body builder, it would appear to be a well developed muscle, but that is not the case. It is very soft to the touch, doesn t not feel like there is a mass of any kind, but movement of my neck on that side causes numbness in my right arm down to my fingers. Any thoughts or recommendations? Which medical specialty would handle this type of concern? Thanks!