I had polio when I was 14, in 1959. After this I was unable to fight infections, I had constant sties on my eyes, absees on my teeth, boils and infected toes and fingers. I had hepetitis and glandular fever. Then I managed to cope but have always been very tired. Now, I am very tired, worryingly so. I had to give up my full time job in 2005 for this reason. I have had every test possible including a blood test for thyroid health. all tests show normal except for vitimin B12 and I have a three-monthly injection for this. Can you help me as I am so tired all the time that I am unable to drive even short distances without stopping at the roadside for a sleep. If I go on a 4-mile walk I am wiped out the next day. Is there anything that has been missed? or have I just got to accept my condition. Many thanks Isabel Pring