To my family and friends who've been following my progress here, I'm sorry for the long gap between my posts regarding my fatigue issues an reporting on my sleep study results. I had hoped to resolve sleeping problems before posting, but, that will most likely be yet another long while.
The good news is, the sleep study showed that I do NOT have many of the most common sleep disorders; I do not have sleep apnea, nor other intrinsic sleep disorder; no narcolepsy or idiopathic hyposomnia.
What the sleep study did show was that my sleep efficiency is poor. I apparently spend most of the night in a light sleep (no deep R.E.M.)and every few minutes I awaken for another few minutes(and I'm not even aware of it).
The problem, or reason, for this inefficient sleep is unknown. I started taking a sleeping medication to see if my sleep would improve, thereby, alleviating my daytime fatigue; I felt better for only a few days - so now I'm in the process of weaning off my anti-depressant because the one I take apparently is known to sometimes suppress REM sleep (crazy, huh?).
So the current status of my fatigue isn't any different from when I first started posting about it. :-(
I now have a personal theory but, forgive me please, I'm too tired right now to put it to text. I'll be back another time to share my thoughts.