?Sleep disorder: There could be many reasons, possibly low blood sugar, but a very specific sudden onset of sleepiness (and usually actually falling asleep with little warning) is narcolepsy. To sort that out you need to see a sleep specialist who will decide if you need a formal overnight sleep test and then the follow-up morning test to see if you still fall asleep quickly after good night's sleep, .
Answered 7/21/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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