Why might someone get nasal congestion when lying down?

Gravity. Gravity can play a role. Just to illustrate this, it is physiologically normal for even the dependent side of the nose to become more swollen than the other when lying on that side. The fact that is has crossed the threshold of become noticeable means that something is going on in there. Could be allergies, polyps or other conditions.

Related Questions

49 year old with serious nasal congestion, really bad when lying down. Have had this problem for a while?

Seek treatment. Infection can cause congestion as well as bad allergies. There are medicines for both. We have many different medications for severe nasal allergies so see your doctor to know what treatment would be right for you. When you lie down the pressure in the veins of your nasal passages is higher and the congestion is usually worse. That is normal. Read more...

How do I treat this? I have nasal congestion (stuffiness), green mucus, headache (quality: dull or achy) (side: front, left, right) (severity: moderate), cough (worsened by: lying down, at night)

Sinusitis? Sounds like you have a sinus infection- more likely bacterial if the duration have been over 2 weeks. You may need an abx- see your doctor. Read more...
Probably the most. useful sign in deciding what treatment to recommend for sinusitis is whether or not you have a fever (temperature >101). That, along with the colored (green) discharge would suggest strong consideration of antibiotic therapy. This would be added to nasal irrigation, humidification, nasal decongestants, pain medications as managed by your physician who may also recommend tests/imaging. Good wishes. Read more...

Nasal congestion which causes shortness of breath especially at night when lying down. Not a mouth breather. Is it normal with stuffy nose? .

Expected. With an upper respiratory tract infection to have some shortness of breath, especially at night, lower airways can be affected too causing such, if you are really suffering see your doctor, you may need some inhaler bronchodilator to use as needed during this attack of upper respiratory tract infection, or may need to see an allergist for comprehensive assessment, goodluck . Read more...

Why might someone get nasal congestion every time they lay down?

Normal. One's nose is meant to be a little congested. So assuming no medical issues that would cause nasal congestion, when one lays down typically the side of the nose that is closest to one's bed will congest and the side that is "up" will decongest. Read more...

Nasal congestion/ snoring when laying down. Tenderness around eye socket/side of nose pain when area moves at times had this for years advice?

Chronic nasal conges. Symptoms could be allergies. Would see your primary doctor first to be examined and try measures to reduce congestion and see if that improves eye & nose tenderness. You may need allergy testing . Read more...