deltadave wrote:While there are undoubtedly several (dozens?)(hundreds?) of possibilities, given the sudden onset, nebulous history of drug abuse and overwhelming fatigue (as opposed to sleepiness) I think I'll go with cardiomyopathy.  Add echocardiogram and/or cardiopulmonary exercise test.
cardiomyopathy -- blech!  That doesn't sound good.  I don't think this is likely.  Here's why:
When fatigue troubles started 19 yrs ago, I resorted to exercise to stir up energy.  And I mean a lot of, and intense exercise.  I was doing 2 hrs a day of hard core ice figure skating training, plus weight lifting.
That went on for 5 years or so, until I finished college and moved to a new job.  Over the past 10 yrs my endurance has deteriorated as the OSA kicked in, and who knows what else might be underlying it.  Even today I can usually force myself to exercise, and for light aerobic, I can perform for 30 minutes and feel like there is no cardio or pulmonary limitation.  The only thing that sucks is that when I am done, I no longer get a period of boosted energy to put to use like it worked in the past.
Anyway, the Dr. has done some EKGs and wasn't alarmed.  But I can ask about these tests.  Seems like a long shot.
Aren't there some other obvious symptoms of something heart related like this besides fatigue, tiredness, and insomnia?
Thanks for input.