If you dream that you are fainting, then you are probably having a blood sugar drop. This can also represent that you are feeling overwhelmed and your dream is telling you to take a break and/or a vacation.
See Also: Breakdown.
[1]It is always a bad omen if you see signs of collapse or illness in your dream, whether you are the sufferer yourself, or whether you tend someone who is ill.
[2](Blackout, Swoon) To blackout or to faint in a dream means suffering from great sorrow.
[3]Faintheartedness
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