Also in retrospect I think I had one episode of PEM 3 years before my ME start date. I cycled 1500 km in 17 days with a broken wrist, and on the morning of the last day I had what I now think was a mini-crash, which I pushed through to finish the trip. For the next three years that became my "most tired I've ever been" story, and nothing like it happened again for the next 3 years. So maybe ME has been dormant in my body for many years, but the amount of exertion required to provoke a crash was so high until recently that I didn't notice anything until 5 years ago following a ridiculous amount of exertion, and then 2 years ago much more regularly as the amount of exertion required to make me crash fell into the everyday activities area.
All speculation of course.
All speculation of course.
Often wonder if there was a link to the previous fatigue it not. It could be just cycling that much caused the body to fatigue, and it's totally unrelated. Certainly if this is an immune system disease or autoimmune then its difficult to see how it could lurk around waiting for exertion... But I have no idea