The only comparison that I have to MS fatigue is the total exhaustion I would experience when recovering from Mononucleosis in 1996.

It was about a week after I started to feel better from the mono. I got up one afternoon, got dressed and went to get my paycheck that they'd been holding for me at work. (I'd been off work for a month at that point, the worst of the mono had started getting better maybe a week or so before)

I went down to work, got my paycheck and was planning on going to get my haircut. I barely made it back to my house. I didnt even get my check cashed. I parked the car crooked in the driveway, crawled upstairs to my bed and called the guy who cuts my hair and canceled the appointment, and then fell asleep for about a day and a half.

I would get so exhausted while recovering from mono that I would fall asleep in the bathroom. On the toilet. I'd wake up, and I'd have fallen asleep while trying to get some toilet paper. I'd find a pile of toilet paper right below the counter top. Had a difficult time one day just getting out of the bathroom because I kept falling asleep.

I have not yet had fatigue quite that bad from the MS, I've come close, but never that close.

Monday I had vertigo and ended up sleeping every time I sat down. But, I think that was more to be blamed on the prescription strength Meclizine I've been taking. That stuff is better than an Ambien for knocking me out when I'm dizzy.

The closest that I've gotten to the fatigue I had while recovering from mono was about a year or two ago. When I got really sick after eating a couple of jars of pineapple. (either something was wrong with the pineapple, or I ate too much of it and it screwed up my body chemistry) I was sick for two days, and was so exhausted from being sick that I slept for two days after the sicky part of being sick was over.