Wasn't looking for actual medical advice; just what people who have this problem find helps. As I said, my ENT said he'd never heard of it. So not a LOT of help there! Sorry to have encroached on a strictly CPAP site, but it's the only place I've inadvertently found people who know this is a real th...

Thank God I just found this site. My problem with not being able to exhale through my nose while lying down began about 15 years ago; steadily worsened since. Yes, it's the "slamming shut" sensation, if I open my mouth I can exhale; it happens when blowing my nose as well; cannot sleep on my back at...