Sleep apnea or: Obstructive sleep apnea is the most common cause of this symptom, but there are other causes (including ondine's curse). A sleep study will show precisely what the cause is.
Answered 10/3/2016
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R/o CHF: The other entity to rule out is early congestive heart failure ("paroxysmal nocturnal dyspnea"). Blood backed up in your lungs produces a vicious cycle by pressing on the pulmonary veins as you sleep -- you break it only by sitting up. It feels horrible and many physicians don't know the real explanation. Good luck.
Answered 11/20/2013
6.1k views
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