Hello
@Fuzzyhead ! I have only just seen this ( fuzzy brain, exhaustion). But I had to answer because it is a
perfect description of the way I am in a PEM crash.
However, also like you, I can, or do, get up most of the time; household chores, local errands, (not enough) admin of my life; visits from a few friends or family, strictly limited to 2 hours max ; on good days a walk - all of these things can be huge or tiny, I
never know the day before - or the hour before.
So, to me it is not strange that you combine the state that you describe with being able to get up, to some degree or other.
I am just emerging from such a PEM state as yours. An experience many here have described: I felt better one day about 10 days ago, and late in the afternoon got out for a walk; a beautiful evening, I was intoxicated (literally, as it turned out) by the air and light and my fast movement! I walked for 3 1/4 miles!
I was of course tired afterward, but just with my permanent exhaustion; it kept increasing and by the 3rd day I was in that Pit. Every time it happens I think (and am told): how stupid can you get??
I hope that you too are emerging from that horror. I think that PR is the only place where you can talk about it and be understood.