What could this be if not lymphoma?
I am a 26 year-old male. I have had a small movable lump on my left collarbone for perhaps ten years, which I believed to be benign and thus never had examined. In the last six months, several new lumps of the same nature have appeared in the area around my neck and jaw, mostly on the right side. Of ten lumps, three have disappeared and seven have remained--they are remaining at a constant size. The only thing that makes me wonder whether these are enlarged lymph nodes is the fact that two of the lumps are on my back, near the spine.
I would have had them examined sooner, but I have no health insurance and no regular physician. I'm in the process of finding such now, because the most recent lump, on my jawline, is larger and more irritating than the others. The lumps are not sore to the touch except for this most recent one, and I suspect that's because it's in a location where it doesn't have much room and is therefore stretching the skin.
I have no other symptoms associated with lymphoma, so I was wondering what the chances are this could be something else. I have not been sexually active and have had no recent diseases. I read about lymph nodes being enlarged for a number of reasons, but most of them imply that they will go away again within a few weeks or that they will be sore. What could this be, if not lymphoma?