My husband has been suffering from general ill feeling which comes n gradually . He describes it as a sick feeling inside. Sometimes he gets chills,dizziness, headaches wit it. The only thing that gives him instant relief is donating blood. As he donates it while the procedure is happening he feels significantly better. This lasts for 2 to 3 months then it happens again and he has to give blood to feel better. He has gone to several specialists and no one can diagnose him. He does not have hemochromatosis. Where should he go next for help? Is there any disease that you know of that would get relief from blood donation?