Stuffy Nose, Sleepless Nights: How Sinus Issues May Affect Sleep Apnea

Quick takeaways

• Sinus issues, such as chronic sinusitis or allergic rhinitis, may be associated with worsened obstructive sleep apnea (OSA) symptoms.³³
• Sinus and nasal conditions may lead to inflammation and nasal blockages that restrict airflow, making you more likely to breathe through your mouth during sleep.
• Breathing through your mouth can cause your upper airway to collapse, which may affect OSA.
• Addressing sinus and nasal issues may support better breathing during sleep for some people with OSA.

Understanding the link between nasal problems and obstructive sleep apnea

If you have obstructive sleep apnea (OSA), you may find your symptoms become more noticeable during sinus infections. Or, you might find that using your continuous positive airway pressure (CPAP) machine feels less comfortable when you have a stuffy nose.

You’re not imagining it; nasal problems such as sinusitis and allergies can affect your airway and breathing patterns. At night, these changes can interfere with your OSA treatments for CPAP therapy and leave you feeling exhausted in the morning.

When you understand how nasal and sinus problems can affect OSA, it’s easier to spot potential issues and work with your doctor to find a solution. By addressing both conditions, you may experience improvements in nighttime breathing and comfort.

This article is for educational purposes only. Certain treatment options discussed in this article, such as CPAP, require a prescription. Consult your doctor for medical advice.

What is obstructive sleep apnea (OSA)?

Obstructive sleep apnea (OSA) is a condition where your upper airway becomes blocked repeatedly during sleep, making it harder for air to flow. ¹ These blockages can reduce or completely stop the flow of air, causing your breathing to pause throughout the night.¹

Many people with sleep apnea experience: ¹

• Excessive daytime sleepiness
• Morning headaches
• Irritability or mood swings
• Difficulty concentrating
• Snoring or gasping for air while sleeping

Over time, untreated sleep apnea can increase the risk of serious health problems such as high blood pressure, heart disease, and stroke.

What is sinusitis?

Sinusitis happens when your sinuses — small spaces around your nose that are filled with air — become swollen or inflamed.² When your sinuses are blocked, you might have a hard time breathing through your nose.

Common symptoms of sinusitis include:

• Congestion or trouble breathing through your nose
• Difficulty smelling
• Deep, dull, aching pressure in the face
• Discomfort around your nose, forehead and eyes
• Postnasal drip
• Headache
• Fever

When sinusitis is caused by a cold or flu virus, symptoms usually go away within a couple of weeks. If you’re still experiencing symptoms after 12 weeks, your doctor may diagnose you with chronic sinusitis.²

How chronic sinusitis and obstructive sleep apnea (OSA) are related

Chronically inflamed sinuses can make it more difficult to breathe through your nose. A blocked nose can make you more likely to breathe through your mouth while you’re sleeping. Breathing through your mouth can narrow the upper airway and increase the risk of airway collapse — a key characteristic of obstructive sleep apnea.³

• If you have OSA, chronic sinusitis may make your symptoms feel more noticeable. Breathing interruptions may occur more frequently at night, affecting your sleep quality. You might notice increased daytime sleepiness and difficulty focusing, and your loved ones might report frequent snoring that keeps them awake.²⁶

Other nasal and sinus issues that can affect obstructive sleep apnea

Sinusitis is just one condition that may be associated with obstructive sleep apnea (OSA). Other health concerns affecting the nose — such as rhinitis, postnasal drip, nasal polyps or deviated septum —may also affect your upper respiratory system and may make OSA symptoms more noticeable.

Chronic nasal congestion and stuffy nose

Nasal congestion (a blockage of the nasal passages) can contribute to OSA. As with sinusitis, a persistently stuffy nose can limit airflow and make you more likely to breathe through your mouth while sleeping. You might notice more frequent breathing interruptions during sleep, which may make OSA symptoms feel more noticeable.⁴

Rhinitis (allergic and nonallergic)

Rhinitis is a condition where the inside of your nose becomes swollen and irritated, which can make it harder to breathe through your nose. There are three main types of rhinitis: allergic, infectious and nonallergic. ²⁷

Allergic rhinitis is caused by allergens such as dust, pollen or pet dander. You might experience it consistently or have occasional flare-ups.

Nonallergic rhinitis, also called vasomotor rhinitis, is often caused by irritants such as smoke, pollution, or perfume. It can also result from shifts in the weather or reactions to certain foods and medications. Infectious rhinitis can be caused by colds and other viruses.⁴

If you experience rhinitis regularly, treating it may help you sleep more soundly. Reducing nasal congestion may also make continuous positive airway pressure (CPAP) therapy more comfortable to use. ²⁸

Postnasal drip

Chronic sinusitis and rhinitis commonly lead to postnasal drip — mucus that drips down the back of your throat. ^29,30 The mucus can trigger a cough, irritate soft tissues and increase your chance of developing a sore throat.

Postnasal drip tends to get worse when you lie down. Mucus pools in your throat, leading to nighttime coughing that can affect your sleep and make OSA symptoms worse.⁷

The best way to manage postnasal drip is usually to treat what’s causing it in the first place. For example, if allergies are triggers, avoiding allergens may help. Using a humidifier or doing gentle nasal rinses can also help thin mucus and ease symptoms.⁸

Nasal polyps and other structural issues

Sometimes, the structures in and around your nose may influence your breathing and OSA symptoms. Nasal polyps (harmless growths inside your nose) are an example. ²⁹ They may contribute to ongoing congestion and make it harder for air to flow freely through your nasal passages.⁹

You might also struggle to breathe through your nose if the wall between your nasal passages is angled or off-center. This condition, called a deviated septum, can affect airflow, restrict mucus drainage, and make you more likely to breathe through your mouth. If medications don’t resolve your symptoms, your doctor may discuss whether surgical options are appropriate.¹⁰

How sinus and nasal issues make sleep apnea worse

For people living with obstructive sleep apnea (OSA), sinus and nasal issues can make symptoms worse. Whether you’re dealing with chronic sinusitis or allergic rhinitis, there are a few ways that your condition can affect OSA.

Reduced airflow and breathing through the mouth

When your nose is blocked by swelling, mucus or the shape of your nasal passages, it can be hard to breathe through your nose. As a result, your body may begin to rely on breathing through your mouth while sleeping. This may make the airway in your throat (known as the pharyngeal airway) less stable and can increase its risk of collapsing.¹¹ If you already have obstructive sleep apnea (OSA), this may lead to more frequent breathing pauses during the night.

What’s more, breathing through your mouth is associated with persistent dryness and poor sleep quality.¹²

Inflammation and airway sensitivity

Many nasal and sinus conditions are associated with inflammation inside your sinuses and nasal passages. When swelling lasts for long periods of time, such as with chronic sinusitis, it can irritate the soft tissues throughout your upper airway.² Allergies and infections can make swelling worse, sometimes even narrowing the space in your throat.¹³

Inflammation and sleep are closely linked. Persistent inflammation can disrupt your sleep cycles and make it difficult to rest. Over time, ongoing inflammation may contribute to poor sleep quality.⁴

Overlapping symptoms and diagnosis

Sinus issues and obstructive sleep apnea (OSA) have similar symptoms, including poor sleep quality, daytime fatigue and headaches. This overlap can make both conditions more challenging to diagnose. For example, your doctor might diagnose you with OSA while conditions like sinusitis may also be contributing to your symptoms.

Your doctor will use a sleep test to help diagnose sleep apnea. A sleep test collects information from your body as you sleep. Your doctor can use this information to determine if you have a sleep condition.

If you’re still experiencing congestion after starting treatment, it may be helpful to see an ear, nose and throat (ENT) specialist to identify nasal and sinus issues.¹⁵ In addition to a physical exam of your nasal passages, your ENT may recommend allergy tests, blood tests or a computed tomography (CT) scan. They may also use a tool called an endoscope — a thin tube with a camera and light on one end — to understand what’s causing your nasal or sinus symptoms.

Treatment options for sinusitis and obstructive sleep apnea

If your doctor determines that you have both sinusitis and OSA, they may recommend a variety of treatments to reduce your congestion and inflammation.

Once you’re diagnosed with OSA, your doctor may recommend continuous positive airway pressure (CPAP) therapy. ³¹ CPAP therapy is a sleep apnea treatment that helps people breathe while they sleep. It uses a small machine placed by your bed to gently deliver a steady flow of air through a mask.

CPAP is a drug-free treatment with zero medication-related side effects. ³⁵ A typical CPAP system includes three parts: a CPAP device, a flexible tube, and a mask that fits over your nose or over both your nose and mouth. The gentle air pressure helps keep your airway open, so you can breathe steadily throughout the night.

Treating nasal problems may ease symptoms and make CPAP more comfortable, but it typically does not replace standard sleep apnea therapy.

Medical treatments for nasal and sinus health

The following medical treatments can help with nasal and sinus issues:

• Nasal sprays: Nasal sprays made with corticosteroids or antihistamines can help reduce the swelling and inflammation associated with rhinitis, nasal polyps and sinusitis.^2,16
• Saline rinses: A saline rinse may help clear mucus and wash away irritants to help reduce inflammation.¹⁷
• Antibiotics: If your nasal congestion is caused by a bacterial infection, your doctor may recommend antibiotics.²
• Allergy management: When you have allergies that cause rhinitis, managing your exposure to allergens can help reduce flare-ups and make it easier to breathe through your nose. That might include avoiding allergens, using high-efficiency particulate air (HEPA) filters and taking antihistamines, steroids or decongestants.⁵

Tips for CPAP users living with sinus issues

Sinus issues may make it feel more challenging for people to use their CPAP. Sinus issues can make it difficult for CPAP devices to deliver pressurized air and may make CPAP feel less comfortable.

Even if you’re dealing with sinus problems and nasal congestion, it’s important to continue your CPAP therapy to treat your OSA. Here are some ways to improve CPAP use when you have sinus issues:

• Use a heated humidifier. These systems add moisture and heat to your CPAP, which support comfort if you experience dry mouth, congestion or a sore throat.¹⁹
• Switch to a new mask. If you’re struggling to use a nasal pillow mask when you’re congested, some people find it helpful to switch to a full-face or nasal CPAP mask. Talk to your doctor; the right CPAP mask can depend on your congestion level.
• Treat your nasal issues. Talk to an ear, nose, and throat (ENT) specialist about resolving congestion with medicine or other treatments. Addressing underlying conditions that contribute to
  nasal blockages may make CPAP therapy easier to use for some people.

Surgical options for sinus issues

When medicine and other treatment options don’t improve your sinus or nasal issues, your doctor might suggest surgery.

• Functional endoscopic sinus surgery (FESS): Designed for chronic sinus issues, this procedure aims to open the sinus passages to support better airflow and mucus drainage.²⁰
• Septoplasty or turbinate reduction: These procedures address issues with the internal structures of the nose. A septoplasty straightens the septum, while a turbinate reduction removes some of the tissue around the bones inside the nose.^10,21
• Polyp removal: Removing nasal polyps may help reduce blockages in your nose and support easier breathing. Studies show that this process may help reduce symptoms in people with obstructive sleep apnea.²²

It’s important to note that while surgery may help make CPAP therapy more comfortable and easier to use, ²⁶ it typically doesn’t cure OSA. Make sure to continue using your CPAP machine as recommended by your doctor.

Lifestyle and home remedies

If you’re dealing with nasal blockages or sinus problems that are affecting your obstructive sleep apnea (OSA) treatment, home remedies may help. Try these tips:

• Use a humidifier in your bedroom to add moisture to the air, which may help support nasal comfort.
• Elevate your head at night or try sleeping on your side.²³
• Avoid alcohol, cigarettes, and heavy meals within 3 hours of bedtime.
• Do your best to maintain a healthy weight, which may be associated with lower OSA severity.²⁴

Working with your doctors

When you’re managing both OSA and sinus issues, it’s important to partner with the right doctors. Consider meeting with an ear, nose and throat (ENT) specialist and a sleep doctor. By working together, they can coordinate care and discuss approaches that address your symptoms and conditions.

For some people, treating nasal or sinus conditions can make CPAP easier to use. If you have OSA and think you might also have a sinus condition, it’s important to talk to your doctor. Addressing sinus issues may help reduce inflammation and support nasal breathing, which can help improve OSA symptoms and create a more comfortable CPAP experience. Regardless of your treatment plan, make sure to schedule regular follow-up appointments. That way, your doctors can monitor your progress and adjust treatment as your health evolves.

To learn more about your sleep health, take our online sleep assessment.

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