Your nose gets stuffy at night because lying down increases blood flow to nasal tissue, and allergens and dry air can worsen it.
Why it’s worse
- Lying down increases blood flow to the head and nasal tissue.
- Allergens in bedding (dust mites, pet dander).
- Dry air.
- Acid reflux at night.
- Natural nasal cycle: one side swells at a time.
- Sinus infection or colds.
Relief
- Raise your head with an extra pillow.
- Use a humidifier.
- Saline rinse before bed.
- Wash bedding weekly in hot water.
- Avoid alcohol before bed.
- Nasal strips.
See a doctor if
It lasts more than 10 days, or you snore or have sleep apnea.
Why the nose clogs more at night
Lying flat lets blood pool in the head and increases pressure in the vessels of the nose, which swells the lining. At the same time, nasal mucus drains toward the throat less well when you lie down. Levels of the hormone cortisol, which suppresses inflammation, are lowest at night, and this can worsen allergy symptoms. The nose also naturally cycles, with one side more congested than the other every few hours.
Common triggers at night
- Dust mites in bedding and mattresses, a leading indoor allergen.
- Pet dander, especially when pets sleep on the bed.
- Dry air from heating or air conditioning.
- Acid reflux, when lying flat lets stomach acid reach the throat and nose.
- Alcohol before bed, which dilates nasal vessels.
- Infections, sinusitis and a deviated septum.
- Pregnancy, which increases blood volume and swelling.
Relief that helps
- Raise the head of the bed or use an extra pillow to lift your head by 4 to 6 inches.
- Wash bedding weekly in hot water above 130 F, and use allergen proof mattress and pillow covers.
- Keep pets out of the bedroom.
- Use a humidifier at 30% to 50% humidity, cleaning it daily to prevent mold.
- Rinse the nose with saline before bed.
- Avoid alcohol and heavy meals in the three hours before sleep.
- Try adhesive nasal strips, which open the nostrils.
Medicines
Nasal steroid sprays used daily are the most effective long term treatment for allergic congestion. Antihistamines, such as cetirizine or loratadine, help with allergies. Decongestant sprays should not be used for over 3 days. Oral decongestants can raise blood pressure and cause insomnia.
Sleep apnea link
Chronic nighttime congestion can make breathing through the mouth, snoring and sleep apnea more likely. If you snore loudly, wake up gasping or feel tired during the day, ask a doctor about a sleep study.
See a doctor if
Congestion lasts over 10 days, comes with fever, thick green discharge and facial pain, or does not improve with treatment. A persistent one sided blockage may point to a polyp or deviated septum.
Position, allergens and the sleeping environment
Lying flat raises blood pressure in head vessels and slows mucus drainage, so congestion feels worse at night. Bedrooms collect dust mites, which live in mattresses and pillows and trigger allergies in an estimated 20 million Americans. Dry air from heating dries the nose lining and increases irritation. Tips that help: wash bedding weekly in hot water at 130 F, use mattress and pillow covers, keep humidity at 30 to 50 percent, raise the head by 30 degrees and rinse with saline before bed. A nasal steroid spray used daily works well for allergic congestion.
Based on data from the American Academy of Allergy, Asthma and Immunology
