Hi There. I have had the same problem of and on for years. Sometimes I feel like my normal self but then it comes back again. I get a over whelming feeling of exhaustion where I can't speak proparly and I find I can't really think . The more I try the worse it is. I tend to get a sore throat and swollen glands and a fever like temperature when I feel like this. I also sometimes feel dizzy or disorintated. ( I once couldn't remember were I was even though I'D only popped to my local shops and was infact at the top of my street. ) If I don't rest I feel worse and get a heavy feeling in my legs like they've become dead weights. It's very annoying because I keep trying to get on with my life and I love to be active and it keeps stopping me doing this. Has anyone got any suggestions ?