The most common signs of sleep apnea are loud, habitual snoring, pauses in breathing that someone else notices, gasping or choking during sleep, and heavy daytime sleepiness despite a full night in bed. Morning headaches, a dry mouth on waking and waking often to urinate are also listed by the NIH’s National Heart, Lung, and Blood Institute. None of these proves you have it. Only a clinician can diagnose sleep apnea, usually using a sleep study, so a cluster of these signs is a good reason to ask a doctor about testing.
Sleep apnea is a common and treatable condition in which breathing repeatedly narrows or stops during sleep. Because it happens while you are asleep, many people do not know they have it, and the first clue often comes from a bed partner.
What sleep apnea is
In obstructive sleep apnea (OSA), the most common type, the muscles and tissues around the throat relax during sleep and the airway narrows or closes. Your brain responds by briefly rousing you to reopen the airway, usually without full awareness. This can happen many times in an hour.
Severity is measured by the apnea-hypopnea index (AHI), the number of breathing pauses or reductions per hour of sleep. Under American Academy of Sleep Medicine scoring, an AHI of 5 to 14 is mild, 15 to 29 is moderate and 30 or more is severe. These numbers come from a test and are interpreted by a clinician; you cannot work out your own. A less common form, central sleep apnea, happens when the brain does not send the right signals to the breathing muscles, and it has different causes.
Signs you might notice at night
- Loud, frequent snoring, often a pattern of loud snores, silence, then a snort or gasp
- Pauses in breathing that a partner sees
- Choking, gasping or snorting awake, sometimes with a racing heart
- Restless sleep or frequent awakenings
- Waking often to urinate
- Night sweats
- A dry mouth or sore throat on waking
Not everyone with sleep apnea snores, and not everyone who snores has sleep apnea. Occasional snoring, for example with a cold, is common. Loud snoring combined with the other signs is what deserves attention.
Signs you might notice in the daytime
- Excessive sleepiness, such as nodding off in meetings, in front of the TV or when stopped in traffic
- Waking unrefreshed after what should have been enough sleep
- Morning headaches
- Trouble concentrating or memory lapses
- Irritability, low mood or anxiety
- Reduced interest in sex
Tiredness has many causes, including simply not sleeping enough. What stands out with sleep apnea is sleepiness that does not improve with enough time in bed. If your main problem is lying awake, or waking too early, sleep apnea is less likely, though both can occur together. See why you cannot fall asleep at night.
Who is more likely to have it
The NHLBI and other health bodies list these risk factors:
| Factor | Why it matters |
|---|---|
| Excess weight | Extra tissue around the neck and throat can narrow the airway |
| Older age | Risk rises as people get older |
| Male sex, and women after menopause | Risk is higher in both groups |
| Family history and airway structure | Anatomy, such as a narrow airway or large tonsils, affects airway size |
| Alcohol and sedatives before bed | Relax the throat muscles further |
| Smoking and nasal congestion | Inflame or block the airway |
| High blood pressure, diabetes, heart rhythm problems | Linked with sleep apnea, sometimes in both directions |
Sleep apnea also affects people of normal weight and women, and it is often missed in women, who may report fatigue, insomnia or morning headaches rather than loud snoring.
Why it is worth getting checked
Untreated sleep apnea is linked with higher blood pressure and heart problems, and sleepiness raises the risk of drowsy-driving crashes. It can also worsen mood and concentration. This is not a reason to panic. It is a reason to get evaluated, because effective treatment exists and many people feel much better once it is addressed.
How a clinician checks for it
You cannot diagnose sleep apnea yourself, and neither can an app. A doctor can diagnose it based on your medical history, a physical exam and the results of a sleep study.
- History and exam. Clinicians often use a screening questionnaire about snoring, tiredness, observed pauses and blood pressure, and look at your airway.
- Home sleep apnea test. A portable device records breathing, oxygen and heart rate overnight at home. Clinicians often use it when sleep apnea is likely and there are no major heart or lung conditions.
- Sleep study in a lab. An overnight study at a sleep center records brain waves, breathing, oxygen, heart rhythm and movement. It is more detailed and is used for more complex cases.
Consumer sleep trackers and phone snoring apps may suggest a pattern worth mentioning to a doctor, but they cannot diagnose sleep apnea.
What to tell a doctor
A clinician can judge your risk more easily if you bring specifics. Ask a partner or housemate what they hear. If you live alone, a short audio recording of your snoring can be a useful starting point. Note how many hours you spend in bed, how sleepy you feel in the day, any history of high blood pressure, and the medicines and alcohol you use.
Also mention how sleepiness affects daily life. Do you nod off while reading, watching TV or sitting in traffic? Have you had near misses while driving? Those answers affect how quickly testing is arranged.
Treatment options
Treatment depends on severity, anatomy and preference, and it should be decided with a clinician. The NHLBI describes these approaches:
- Positive airway pressure (such as CPAP): a mask delivers steady air pressure to keep the airway open. It is a standard treatment for moderate to severe obstructive sleep apnea. Getting used to a mask takes adjustment, and clinicians can help with fit.
- Oral appliances: a custom dental device that moves the lower jaw forward, sometimes used for milder cases or when pressure therapy is not tolerated.
- Lifestyle changes: weight management, sleeping position changes and limiting alcohol can reduce severity for some people.
- Surgery or implanted nerve stimulation: considered for selected patients.
General habits from the sleep quality guide and sleep tips that actually help support good sleep, but they do not replace treatment for a breathing disorder.
Sleep apnea or ordinary bad sleep
| Feature | Ordinary bad nights | Possible sleep apnea |
|---|---|---|
| Pattern | Comes and goes with stress or schedule | Persistent, most nights |
| Snoring | Occasional | Loud and habitual, with pauses |
| Waking | Trouble falling or staying asleep | Gasping, choking or unexplained awakenings |
| Daytime | Tired, improves after a good night | Heavy sleepiness even after a full night in bed |
| Response to better habits | Usually improves | Often little change |
This table is for noticing patterns, not for self-diagnosis.
When to see a doctor
Make an appointment if you have loud snoring plus any of these: breathing pauses seen by someone else, waking up gasping or choking, persistent daytime sleepiness, morning headaches, or blood pressure that is hard to control. See a doctor sooner if you fall asleep while driving or you drive or operate machinery for work. Do not drive when you are drowsy.
Seek urgent care for chest pain, severe shortness of breath, fainting, or a racing or irregular heartbeat. Call your local emergency number for any sudden severe symptoms.
If you decide to see a clinician, you can prepare with the questions-to-bring checklist.
Where this comes from
This page draws on the National Heart, Lung, and Blood Institute’s information on sleep apnea (signs, risk factors, diagnosis and treatment) and the American Academy of Sleep Medicine’s scoring categories for sleep apnea severity. It is general information, not medical advice or a diagnosis, and it was reviewed on 7 October 2026. Testing options and what insurance covers change over time, so check with your clinician and the source organizations.