I am reaching out on behalf of my spouse, and I am looking for a second opinion. The lymph node on the left side of the neck has been swollen for some time now, causing continuous pain in the head's neck, jaw, and back. Pain is now moving into the left arm, hand, and leg. It has been continuing to get worse every day over the course of two months. We did an ultrasound which came back normal. Also, we have seen two ENT specialists and one nurse practitioner; none could determine what the cause is and if there is anything to do to make it go away. Very concerned about what could be causing the pain or if there is anything to make the pain go away, maybe even if this is a common symptom of something that might ring a bell to you.