How many people have had some sort of head injury preceding their coming down with CFS symptoms? If this happened to you, how long was it before the CFS hit? I think there's a pretty strong connection here, and so it would be interesting to hear your experiences. I hit my head pretty hard (concussion with short black-out) in late 1994 and started experiencing full-blown CFS in early 1996. Prior to that I had as much energy as anyone I've ever met.