So when I began having CFS two years ago, I was so profoundly fatigued and weak that I slept all the time without problem, day or night. As of late though, and also sporadically over the past two years, I'm finding myself dealing with something I have never ever dealt with in my life- insomnia. On days that I'm not exhausted due to over doing it I cannot fall asleep until about 1am or so, unless I take a ton of diphenylhydramine (which isn't even an option any more, for reasons I can explain if anyone wants to know) and am profoundly, oppressively tired in the morning through afternoon (7am-2pm) like I've been heavily drugged to the point of near coma. It's been happening more frequently the past month or so. I still get tired at 9 or 10 pm, go to bed at that time, then after 30min to an hour, I'm not tired any more. This would all be fine if it weren't for the fact that my body feels severely sleep deprived and wired in the mornings as a result . Even after 10pm or so I feel crappy, even though I'm alert- I feel a heaviness under my eyes that I usually only have felt in the past when I've been sleep deprived, and I am tired but my brain is alert and won't shut off despite it. I just found out about DSPD (Delayed Sleep Phase Disorder) which kind of fits my new sleep pattern, I still feel over tired when I'm up past 10 or 10:30 like I did in my pre-CFS days, whereas it seems like with DSPD, sufferers feel fine at night, and fall asleep once they feel tired. So I don't know what is going on!