my husband has had issues with sporadic fevers and coughing, headaches and once and has had swelling in one hand and one knee, This started about two months ago. about once every two weeks this has happened. He is fine during the times in between episodes. He has seen several doctors and has had multiple tests done. Nothing conclusive has been diagnosed. He has also had a chest x-ray. Today his fever was 102.3. I am concerned there sis something major going on and it is completely being missed