Welcome to the group! I don't have this issue 24/7, but I do wake every day with head congestion, which only clears after I am upright. So, I cannot breathe through my nose when sleeping. Which seriously limits my sleep. Like, I cannot sleep generally for more than maybe two hours at a time. Of course, my bladder also contributes to that. However, it is allergy season here in Austin, and I have the runny nose. sneezing, and coughing, likely from cedar. But it is fairly frequent, so there are other things in the air that are irritants, which I am now more susceptible that I once was. I am on 02 24/7 and I have a large air purifier right next to my concentrator. It does help some. But it can be quite frustrating, especially as I sleep with an NIV machine (Non-Invasive Ventilator - an advanced Bi-Pap Device). So, the condition limits my use of that, too, and I cannot get full benefit of it. All of it together means obstacles that prevent me from ever getting enough sleep. Plus, I should buy stock in Puffs with lotion. Ha! There's a lot of good information here, so look around. I've learned an immense amount from the good folks here!