about 10 years ago I left work as I was getting tired (and thus grouchy). I kept going downhill, and periodic part time jobs just wore me out, so I lived off savings and such. Now, I finally have a doctor tell me he is pretty sure I have CFS. So now I wonder- if I have not worked much in the past 10 years I figured I would just not be eligible for SSDI. But I also have a track record of 10 years of telling the doctor I've been getting more and more fatigued. Does SSDI assume your disability started as of the date of diagnosis? or might it be possible to say I became disabled when I left work, I just did not know what it was until the diagnosis?