How does this theory line up with the my experience, which seems to be similar to a lot of people with CFS:

I had high energy levels until I suddenly got sick, and had a mild fever for about a day. After that I had the sort of fatigue one feels when having the flu, except it lasted for about 8 months, and then gradually lifted. After that my energy levels totally recovered and stayed normal for over a decade. All tests, including psychiatric evaluation were normal so it was considered CFS.