Noisy breathing during sleep: whistling, wheezing, stridor and congestion

Noisy breathing during sleep that isn't quite snoring is usually air moving through a narrowed spot somewhere between your nostrils and your lungs. Where that spot is shapes the sound. A whistle often starts in the nose, a wheeze in the airways of the chest, and stridor in the throat or windpipe. Most of it is harmless congestion, but a few sounds are worth acting on quickly, and stridor is one of them.

What counts as noisy breathing during sleep?

Noisy breathing during sleep is any breathing sound loud enough to hear across the room that isn't the classic rattling snore. Cleveland Clinic describes snoring as a rumbling, snorting or harsh rattling sound from partial blocking of the airway, and says the sound can range from a quiet vibration or whistle to a loud rumble. So the line between snoring and noisy breathing is blurry.

What separates them is mostly where the narrowing is. Snoring is soft tissue in the throat vibrating. The other sounds in this guide come from air squeezing through a tight nose, narrowed lung airways or a narrowed throat and voice box. Asking a partner to describe the sound, or recording a night on your phone, gives a doctor far more to go on than "I breathe loudly." Our guide to snoring sounds explained covers the snore itself in more detail.

What do the different breathing sounds point to?

Each breathing sound points toward a different part of the airway, though no sound is a diagnosis on its own. There's little research on breathing sounds in sleep specifically, so this table draws on Cleveland Clinic's descriptions of each one.

Why does a stuffy nose make breathing so loud at night?

A stuffy nose makes breathing louder at night because lying down lets mucus collect where it would otherwise drain. Cleveland Clinic explains that during the day you swallow mucus without noticing, but when you lie down gravity no longer helps it slide down your throat, so it pools in your sinuses and leaves you feeling stuffed up.

Cleveland Clinic lists several other night-time triggers: allergens in the home such as dust, pet dander and mold; acid reflux, since stomach acid can travel up when you lie down and irritate the throat and sinuses; and colds or long-lasting sinus inflammation, which fill the nasal passages with extra mucus. It notes that people with sinus inflammation often feel worse lying down because the mucus can't drain.

Its suggestions for a clearer night include changing your sheets at least once a week, showering before bed to rinse off outdoor allergens, using saline spray or a rinse to loosen mucus, running a humidifier to ease dryness and staying hydrated. Our guides to why your nose is stuffy at night and how to sleep with a stuffy nose go further.

Why does my nose whistle when I sleep?

A nose whistles when air rushes through a small or narrowed opening, the same way you whistle through pursed lips. Dried mucus, a tight nostril or swelling inside the nose can all make one.

A whistle that keeps coming back can also be a sign of a hole in the septum, the wall between your nostrils. Cleveland Clinic lists a whistling sound when you breathe through your nose among the symptoms of a perforated septum, along with dryness and crusting inside the nose, nosebleeds, a runny nose and nasal obstruction. It also says you can have a perforation without knowing it, and warns against poking a finger in to feel for one, since that can tear the tissue further and cause infection. Our guide to a whistling nose when breathing covers the causes and fixes.

What does wheezing during sleep mean?

Wheezing during sleep means the airways in your chest are partly blocked or narrowed. Cleveland Clinic describes wheezing as a shrill, coarse whistling or rattling sound that's usually most noticeable when you breathe out. It says narrowing higher up tends to sound hoarser, while lower narrowing can have a more musical tone, a bit like a clarinet.

Cleveland Clinic names asthma as one of the most common causes, and lists many others, including bronchitis, COPD, pneumonia, allergies, acid reflux, fluid in the lungs from heart failure and smoking. In adults, it says people who smoke and people with emphysema or heart failure are the most prone to wheezing.

It may be fine to wheeze during a cold. But Cleveland Clinic says to see a provider if wheezing is new, keeps coming back, or comes with shortness of breath, rapid breathing, confusion, chest tightness or pain, swelling of the lips or tongue, or a bluish tinge around the skin, mouth or nails. It says gasping for air, or skin, mouth or nails turning blue, is a medical emergency. Our guides to mouth tape and asthma and sleep apnea and asthma cover the overlap with sleep.

What is stridor, and why is it urgent?

Stridor is a harsh, high-pitched noise caused by narrowing or blockage in the throat, voice box or windpipe, and it always deserves a doctor's attention. Cleveland Clinic says stridor is a cause for concern in everyone and especially dangerous in children, whose airways are smaller. Stridor that starts suddenly, it says, needs medical care as soon as possible.

Cleveland Clinic explains that stridor can happen on the in-breath, the out-breath or both, depending on where the narrowing is. Causes include upper respiratory infections, swelling of the epiglottis, allergic reactions, choking on a foreign object and tumors. It lists any decrease in consciousness and pale, gray or blue lips or fingertips as danger signs.

If you or someone you're with has stridor along with trouble breathing, call emergency services. This is not a sound to manage at home, and not one for nasal strips or mouth tape.

What about groaning or gasping in sleep?

Groaning on the out-breath during sleep may be catathrenia, while gasping after a quiet pause is a classic sign of sleep apnea. They sound different and mean very different things.

Cleveland Clinic describes catathrenia as loud moaning or groaning while you breathe out, lasting from a couple of seconds up to 40 seconds, often noticed first by a partner. It says catathrenia isn't dangerous to physical health, may be mistaken for snoring, and doesn't always need treatment.

Gasping is different. The NHS lists breathing that stops and starts and gasping, snorting or choking noises as the main sleep apnoea symptoms, and says to see a GP if you have them. Our guide to waking up gasping explains the causes.

Can nasal strips quiet noisy breathing?

Nasal strips can quiet noise that comes from a narrow front of the nose, which is where much of the stuffy, whistly night breathing starts. In a 1997 randomized, placebo-controlled study in Laryngoscope, an external nasal dilator strip significantly increased the area of the nasal valve, the narrowest part of the nasal passage, in 53 athletes at rest. Cleveland Clinic also lists nasal strips as a snoring treatment that can help keep the nasal passages open.

Strips have limits. They can't reach a wheeze in the chest or stridor in the throat, and they can't close a hole in the septum. They also won't clear mucus, so they work best alongside the bedtime habits above. Our guide to how nasal strips work explains who they suit.

Some people pair strips with mouth tape to keep breathing through the nose all night. Only do that if your nose is clear: a Cleveland Clinic sleep specialist says never to use mouth tape with nasal obstruction or congestion, chronic allergies, a sinus infection, enlarged tonsils, a deviated septum or heart issues. Try our nose test first. We don't recommend mouth tape for children.

When should you see a doctor about noisy breathing?

See a doctor if your noisy breathing is new, getting worse or comes with other symptoms. Get emergency help for stridor with breathing trouble, or for wheezing with gasping, chest pain, confusion or a blue tinge, as Cleveland Clinic advises.

See a GP if a partner hears pauses, snorts or gasps, or you feel very tired during the day, since the NHS lists these as sleep apnoea signs. A blocked nose that never clears, or a whistle that keeps coming back, is worth an ENT check. If you're pregnant and your breathing has become noisy, mention it to your midwife or doctor before trying new devices. Our safety page has more on who should skip mouth tape.

Our pick (paid partner): TitanAir Nasal Strips

For noisy breathing that starts in a stuffy or narrow nose, our pick is TitanAir Nasal Strips. They won't help a wheeze or stridor, so rule those out first. We haven't tested or ranked nasal strips ourselves; this is our recommendation.

Titan describes them as drug-free external nasal dilators with flexible spring-loaded bands. It says to place the strip just above the flare of the nostrils, on the soft part of the nose rather than the bony bridge, on clean, dry skin without moisturizer, and to remove it by loosening it with warm water and peeling slowly from the ends inward. Titan says they're designed to pair with Titan Bamboo Silk Mouth Tape, that every batch is third-party tested and certified PFAS-free, and that its 30-night guarantee refunds you if your sleep isn't better after 30 nights.

Read next

• Post-nasal drip at night
• Nasal valve collapse
• Why do I breathe through my mouth at night?

* This content is for informational and educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease or health condition. Talk to a qualified healthcare provider about your health.