Having had both, I don't believe that long covid is related to CFS, even though both check some of the same boxes.
You did not respond to my question regarding whether your initial fatiguing illness met the Canadian consensus criteria (CCC) for ME/CFS. If you don't satisfy these diagnostic criteria, it casts some doubt over whether you really had ME/CFS. I am assuming you did not satisfy the CCC, in which case, we don't really know if you actually had ME/CFS.
You also did not answer my question about the severity of your fatiguing illness. If you only have mild symptoms, which means you are still able to work full or part time, it's much easier to get into remission than if you are moderate or severe. Severe ME/CFS means you are bedbound most of the day and night, and only up and walking around the house for a few hours a day. I've been severe, but at present am moderate.
As for your comparison of your initial fatiguing illness with long COVID, and your conclusion that because the symptoms were slightly different they must be different diseases, this is unscientific. First of all, you may not have had ME/CFS anyway, if you did not satisfy the CCC diagnostic criteria.
Secondly, even amongst those who have proper ME/CFS, as defined by the CCC diagnostic criteria or the updated version called the international consensus criteria (ICC), symptoms can vary from one patient to the next. Indeed, some ME/CFS patients do not have the fatigue symptom at all, yet suffer from extremely debilitating PEM and brain fog. Yet other ME/CFS patients have constant crushing fatigue. So you have no fatigue or totally crushing fatigue, and still have ME/CFS.
So I don't think your personal experience can answer the question of whether or not long COVID is just another form of ME/CFS.
You might find it interesting though that long COVID is 4 times more prevalent in females than in males. The female to male ratio of those hit with this disease is 4:1. Well that is exactly the same ratio as we find in ME/CFS. So that is a further suggestion that LC and ME/CFS may be the same disease.
Edited by Hip, 07 December 2022 - 11:46 PM.