Importantly, the delayed worsening can clearly be measured by light exercise testing. It isn’t the same as normal post-exercise recovery or soreness. It’s far worse and can even be triggered by strenuous mental activity (perhaps energy expenditure in general).
For many, it has a distinct viral trigger. They can be fine and healthy one week, then become chronic CFS sufferers after an infection with a number of notable viruses (EBV is common).
Sound familiar? It has a lot of parallels to “Long COVID”, but it just never got the same attention because it’s not attached to a global pandemic in the 24/7 news cycle.
I'm really grateful to have seen your comment and that you answered me, I will do some experiments and tests to asses my situation better and check if some of the solutions can help.
http://www.cfsselfhelp.org/library/fred-friedberg%2525E2%252...
https://forums.phoenixrising.me/threads/dr-friedberg-intervi...
My wife has had ME/CFS for more than a decade. Honestly many of the touted remedies she finds online sound like snake oil, but if you are suffering and nobody has a good clue, you try each one in turn hoping you might be one of the lucky people who responds to a given modality.
Cort Johnson runs the website Health Rising, which acts as a clearing house for recent news about ME/CFS (and recently long covid as it relates to ME/CFS) and there is a community built around that site.