One of the benefits of this site is the exposure to a greater number of people. This really gives perspective of this condition. I became curious after a previous posting about how other people experience a "crash". It did have me consider that I may need to be more specific with medical personal and not take for granted that we are thinking of the same experience. I sometimes find that in a day and throughout the week I may need to lie down or stay couch/bed bound for significant hours at a time due to exhaustion, nausea or being too "spaced out" to really do anything. I do not consider these experiences a "crash". A crash for me is when I develop a migraine, have nausea bad enough that nothing (only water) will make me worse, and am weak to the point that I cannot walk. Sleep is difficult. I feel like I am in a prison isolation cell but no bread, just water I usually stay in my darkened bathroom. The "episode" lasts 24-36 hours. It seems to increase, hit a climax, then decrease. Usually at the 12 to 20 mark I hit the peak. Once I have hit the climax and it starts to wean, I use a clock to count the hours I know it will take to get out of the crash. What I am getting back to is my regular life which is persistant nausea (much less than the crash however) and fatigue (of course). Know that I have had months of experiementing with trying to prevent a "crash". I have had some success in reducing their frequency (from 3x/week to 1/weekly) but they are inevitable for me. It seems that all my interventions have improved my daily living but not the restoration part that I believe prevents crashes. Even though I know there is a range if experiences with CFS, when it came to "crashes" I assumed that my experience was everyone's experience. It would be helpful to know the range of experiences so I could gain perspective on this.