I am 42, male.
For the past few months, I sometimes get sudden tiredness, drowsiness and a heavy feeling for a few hours.
The strange thing is that I may be completely normal and active for several days, then suddenly it happens again.
During the episode:
BP is normal.
Pulse is normal.
Blood
sugar is normal.
I am not physically weak and can still walk/exercise normally.
No unexplained weight loss.
ECG, echo, TMT, brain scan and recent blood tests have been normal.
Has anyone experienced this kind of intermittent tiredness/drowsiness? What was the cause in your case?