The lymph nodes are part of the immune system, so abnormalities in autoimmune disease can also be seen in this area. There are lymph nodes scattered around the body, but increased numbers of lymphocytes or different cells moving into the lymph nodes lead to the enlargement of the lymph node.
Therefore, this symptom is extremely prevalent in patients with lupus erythematosus, the plethora of the highly hyperactive autoimmune system. Another effect of rheumatoid arthritis is that it can also cause swollen lymph nodes. A condition like that is often also accompanied by a fever.
