he confirms that as soon as you lay down, blood flow increases into the nose. “if somebody is already at about 50 per cent in terms of their nasal breathing, that can be all it takes to push them to where they start to feel that constriction.”
if you don’t have clear nasal breathing, there’s a domino effect on your health, says chin. “you can’t really smell very well. and if you can’t smell, then often your sense of taste is impacted. and when you’re sleeping, if you’re not breathing well through your nose, then you have to open up your mouth. your mouth dries out and you get a sore throat and you have very disruptive sleep.”
the underlying cause of a stuffy nose
it can be allergies where the nose passages and sinuses swell because they’re trying to flush out allergens, like pollen and pet dander. but what’s also increasingly common in chin’s practice is a condition called chronic rhinosinusitis,
which is ongoing inflammation of the sinuses that affects about 10 per cent of the population.
there are many reasons why people develop the condition, including allergies or exposure to tobacco or other air irritants, but often, it can also be an immune system disorder, chin says. “think of it like asthma inside the nose. the immune system in the nose gets hyperactive and swells up, and people feel like they have a cold all the time.”
nasal polyps, the soft noncancerous growths that can develop as a result, add to the obstruction of your sinuses.
another possible cause of nighttime congestion is an infection that comes on relatively quickly where you also experience fever, facial pain and the runny discharge from your nose. the most common cause is viral — like covid-19 — that can also knock out your sense of smell. viral infections will heal on their own in a couple weeks. bacterial infections cause similar symptoms, but require antibiotics to clear up, so see your doctor if symptoms don’t improve.