It's likely that one nostril will always feel more stuffed up than the other when you're sick. Still, after about 90 minutes to 4 hours, your nose switches sides.
It's common and usually clears up on its own within 2 to 3 weeks. But medicines can help if it's taking a long time to go away.
It is quite common for people to complain of having a blocked nose on one side. If this is caused by an infection or allergies, then it is quite common for the blocked nostril to switch sides. If caused by a deviated septum or obstruction, then the same nostril will always be affected.
In rare cases, this can be due to a tumor, but these are uncommon. Chronic and persistent obstruction on one side should be evaluated by a doctor, and probably an ENT (otolaryngologist). Foreign objects in the nose. In small children, blockage in one nostril might be due to a foreign body that they put in their nose.
It's down to what's known as the 'nasal cycle'. We might not realise it, but our bodies deliberately direct the airflow more through one nostril than the other, switching between nostrils every few hours.
Your stuffy nose that just doesn't seem to go away may be a sign of an underlying issue like allergies. Untreated allergies can cause chronic sinusitis with and without nasal polyps. Fortunately, chronic nasal congestion is very treatable. The first step is to visit a health care provider.
Chronic sinusitis can be caused by an infection, growths in the sinuses (nasal polyps) or swelling of the lining of your sinuses. Signs and symptoms may include a blocked or stuffy (congested) nose that causes difficulty breathing through your nose, and pain and swelling around your eyes, cheeks, nose or forehead.
Blowing the nose can worsen the feeling of congestion due to pressure build-up within the nostrils, which may shoot up the mucus into the sinuses instead of ejection through the nose.
When you've got a blocked nose, try sleeping on your back with your head elevated so gravity can then help to drain away congestion. Sleeping on your side can also help keep your airways open, so you can breathe more easily. If acid reflux is causing your blocked nose, sleeping on your left side is best.
According to Dr. Leann Poston of Invigor Medical, “Elevating your head before bed can increase drainage and decrease congestion.” That's why the best position to sleep with a stuffy nose is on your back with different types of pillows elevating your head and neck.
Nasal congestion typically clears after a few days, but congestion that lasts for a week or more may be a sign of an infection. Left untreated, nasal congestion may cause sinusitis, nasal polyps or middle ear infections.
Blowing your nose to alleviate stuffiness may be second nature, but some people argue it does no good, reversing the flow of mucus into the sinuses and slowing the drainage. Counterintuitive, perhaps, but research shows it to be true.
One of the main reasons why nasal congestion gets worse at night is because of gravity. When lying down, the blood vessels in your nasal passages dilate which leads to increased blood flow to the area. This causes the tissues to swell and become congested.
Running a humidifier or cool-mist vaporizer in your home or office is a simple and effective way to reduce nasal congestion, says Stringer. Breathing in humid air helps soothe irritated nasal tissues, lessens sinus inflammation, and thins mucus (which helps it drain), he explains.
In adults and children age 2 and older, use it only on the neck and chest.
Many people like sleeping in a cool room, but don't make it so cold that you wake up shivering in the middle of the night. When you're feeling sick, you might want to consider raising the temperature a little, rather than letting the thermostat drop. Just don't forget to change it back when you're feeling better.