I was wondering about the term brainfog and how the definition may vary from person to person. I've had a form of CFS for 7 years now. It started suddenly on June 21st 1998 when I woke up with what I can best describe as the symptoms of a generalized stroke. (I was 26 then). I woke up that day feeling like I had 6-8 drinks of alcohol, mixed with benadryl and low blood sugar. All my skin had lost a fair amount of sensation,was seeing stars and with coordination problems (most of the problems anyone would have if drunk). Over a period of 6-12 months I saw about 50% improvement and it just stayed at that level. I still can't feel sunburn and scratching does not produce a normal sensation. I see stars almost 24/7 (not floaters, as if I've stood up too quickly). The drunken type feeling is still there but it's more like 3-4 drinks now. Feel very detached. These symptom never fluctuates for me. So for those out there with symptoms that have been referred to brainfog..is what I'm describing similar to what you have? or is it different in characteristic?