Dave, I also had daytime sleepiness where I would be sitting at my desk working one minute, then fall asleep and start dreaming almost instantaneously the next. The reason in my case was because of severe sleep apnea (55 episodes/hour according to my sleep study). I am no expert on sleep, but from w...

A couple of years ago, when I first started on CPAP, I had similar difficulties as you described in your post, Exhausted. My nose would be dry and hurt when I awoke in the morning. I talked my doctor into prescribing me a humidifier, which also happened to be a passover type, and experienced a simil...