When people think about sleep apnoea, loud snoring is often the first symptom that comes to mind. But some of the most noticeable effects of the condition may actually happen while you are awake.
Feeling exhausted despite spending enough time in bed, struggling to concentrate, waking with headaches or becoming unusually irritable can all be potential sleep apnoea symptoms. Because these problems can easily be blamed on stress, work or simply “not being a morning person”, sleep apnoea may go unrecognised.
Obstructive sleep apnoea (OSA) occurs when the airway repeatedly becomes partly or completely blocked during sleep, interrupting normal breathing and sleep quality. A GP can assess possible sleep breathing problems and determine whether further investigation, such as a sleep study, may be appropriate.
What Is Sleep Apnoea?
Sleep apnoea is an asleep-related breathing disorder.
The most common form is obstructive sleep apnoea, or OSA. It occurs when the upper airway becomes partly or completely blocked while you are asleep.
Breathing may stop temporarily before the brain briefly wakes the body enough to reopen the airway. These short awakenings are known as arousals.
The cycle can occur repeatedly throughout the night without being aware of it. As a result, you may technically spend many hours in bed but still fail to achieve consistent restorative sleep.
Healthdirect notes that OSA can involve repeated pauses in breathing, with people often unaware that these episodes are occurring.
What Are the Common Night-Time Signs of Sleep Apnoea?
Some of the clearest signs of sleep apnoea occur during sleep and may be noticed first by a partner or family member.
Possible night-time symptoms include:
- Loud or persistent snoring
- Pauses in breathing noticed by another person
- Waking up gasping or choking
- Restless sleep
- Frequent tossing and turning
- Breath holding
- Difficulty staying asleep
- Dry mouth on waking
- Night-time heartburn in some people
One of the challenges is that you may not know these things are happening.
If someone regularly tells you that you stop breathing, choking, or gasp during sleep, it is worth discussing this with your GP rather than dismissing it as ordinary snoring.
Does Loud Snoring Mean You Have Sleep Apnoea?
Not necessarily.
Many people snore without having obstructive sleep apnoea, so loud snoring by itself cannot diagnose the condition.
However, snoring becomes more concerning when it occurs alongside symptoms such as:
- Witnessed pauses in breathing
- Gasping or choking during sleep
- Excessive daytime sleepiness
- Morning headaches
- Difficulty concentrating
- Waking feeling unrefreshed
A partner’s observations can be particularly useful because they may notice breathing interruptions that you cannot recognise yourself.
Healthdirect recommends considering bringing someone who shares your bedroom to a medical appointment, as they may be able to describe whether your sleep is noisy or disturbed.
Sleep Apnoea Daytime Symptoms You May Be Missing
The effects of disrupted sleep do not necessarily disappear when you get out of bed.
In fact, sleep apnoea daytime symptoms may be the reason many people eventually seek medical advice.
1. Feeling Tired Despite Sleeping All Night
One of the most common symptoms is waking feeling as though you have barely slept.
You might spend seven or eight hours in bed but still feel:
- Exhausted in the morning
- Unrefreshed
- Low in energy
- Ready to fall asleep again shortly after waking
Repeated breathing interruptions can fragment sleep, making it less restorative even if you do not remember waking during the night.
2. Excessive Daytime Sleepiness
There is a difference between occasionally feeling tired and repeatedly struggling to remain awake during the day.
Sleep apnoea may cause sleepiness while:
- Watching television
- Reading
- Sitting in meetings
- Working at a computer
- Travelling as a passenger
- Performing quiet or repetitive tasks
Excessive daytime sleepiness can become a safety concern when driving or operating machinery. Healthdirect notes that untreated OSA is associated with an increased risk of car and workplace accidents.
If you are struggling to remain awake while driving, do not simply push through tiredness.
3. Morning Headaches
Frequently waking with a headache can have many possible explanations, but it is also reported by some people with obstructive sleep apnoea.
A headache alone does not mean you have an OSA.
However, recurrent morning headaches alongside loud snoring, daytime sleepiness or witnessed breathing pauses provide additional reasons to discuss your sleep with a GP.
4. Difficulty Concentrating
Poor sleep can affect how clearly, you think.
You might notice:
- Difficulty maintaining attention
- Forgetfulness
- Trouble learning new information
- Reduced productivity
- Difficulty making decisions
- Feeling mentally “foggy”
Healthdirect lists problems involving attention, learning and memory among symptoms that can occur with obstructive sleep apnoea.
These symptoms can easily be attributed to a busy lifestyle, which is one reason for considering your sleep quality to be important.
5. Irritability and Changes in Mood
Sleep and emotional wellbeing are closely connected.
When restorative sleep is repeatedly disrupted, some people notice:
- Irritability
- Moodiness
- Reduced patience
- Difficulty managing stress
- Low mood
Depression and personality changes have also been associated with untreated OSA.
These symptoms have many possible causes, and sleep apnoea should not automatically be assumed to be responsible. However, persistent mood changes occurring alongside significant sleep problems deserve medical assessment.
6. Reduced Performance at Work or Study
Poor concentration, fatigue, and sleepiness can gradually affect everyday performance.
You may find yourself:
- Making more mistakes
- Taking longer to complete familiar tasks
- Losing concentration during meetings
- Forgetting information
- Relying heavily on caffeine
- Struggling through afternoon periods of sleepiness
Because these changes can develop gradually, people sometimes adapt to feeling tired and begin treating them normally.
Persistent daytime fatigue should not automatically be dismissed as part of having a busy life.
How Can Poor Sleep Affect Daily Wellbeing?
A sleep disorder can affect much more than how energetic you feel.
Healthdirect notes that sleep disorders can interfere with everyday functioning and may also increase the risk of chronic health conditions.
When sleep is repeatedly interrupted, it may affect:
- Energy
- Concentration
- Memory
- Mood
- Productivity
- Relationships
- Exercise motivation
- Driving safety
- Workplace safety
Sleep apnoea is also relevant to broader physical health.
Untreated obstructive sleep apnoea has been associated with conditions including:
- High blood pressure
- Heart rhythm problems
- Coronary heart disease
- Heart failure
- Stroke
- Diabetes
This does not mean that everyone with sleep apnoea will develop these conditions. It does mean that persistent symptoms deserve attention rather than being viewed only as a sleep inconvenience.
Who Is at Higher Risk of Sleep Apnoea?
Obstructive sleep apnoea can affect anyone.
However, Healthdirect identifies several factors associated with a higher risk, including:
- Being overweight or living with obesity
- Being male
- Being a post-menopausal female
- Middle or older age
- Having a naturally narrow airway
- Having a larger neck
- Enlarged tonsils or adenoids
- Having a large tongue
- Family history of OSA
- Drinking alcohol
- Smoking
Children can also develop obstructive sleep apnoea, with enlarged tonsils or adenoids being common contributing factors in childhood.
Having one or more risk factors does not mean you have sleep apnoea. Similarly, someone who does not fit the stereotypical picture can still develop the condition.
Can Sleep Apnoea Affect People Who Are Not Overweight?
Yes.
Body weight is one risk factor for obstructive sleep apnoea, but it is not the only one.
Airway anatomy, age, sex, family history, enlarged tonsils or adenoids and other factors can also contribute.
This is why persistent symptoms should be assessed based on the overall clinical picture rather than assuming that only people in certain weight categories can have sleep apnoea.
When Should You Discuss Sleep Apnoea Symptoms With a GP?
Consider booking a GP appointment if you or someone close to you has noticed possible sleep apnoea symptoms.
In particular, arrange an assessment if you regularly experience:
- Loud snoring
- Witnessed pauses in breathing
- Gasping or choking during sleep
- Persistent daytime sleepiness
- Waking feeling unrefreshed
- Morning headaches
- Difficulty concentrating
- Significant irritability or mood changes
Healthdirect recommends seeing a doctor if you or someone close to you is concerned about possible obstructive sleep apnoea.
You do not need to wait until your symptoms become severe.
What Will Your GP Ask About?
Your GP will usually begin by building a picture of your sleep and general health.
They may ask about:
- Snoring
- Breathing pauses
- Gasping or choking
- Sleep duration
- Daytime tiredness
- Morning headaches
- Concentration
- Medical conditions
- Medicines
- Alcohol and smoking
- Family history
- Your usual sleep routine
Your GP may also examine your nose and throat and check factors such as blood pressure and general health.
If you share a bedroom with someone, their observations can be useful because they may have noticed symptoms that happen while you are asleep.
How Is Sleep Apnoea Diagnosed?
Symptoms can raise suspicion of sleep apnoea, but diagnosis generally requires further assessment.
A GP may refer you to a sleep specialist or sleep clinic for a sleep study.
Depending on your circumstances, this may be:
- An overnight study conducted in a sleep laboratory, or
- A home sleep study
During a sleep study, measurements can include breathing patterns and oxygen levels while you sleep.
The results can help determine whether sleep apnoea is present and how severe it may be.
What Happens If Sleep Apnoea Is Diagnosed?
Treatment depends on the severity of the condition, symptoms, underlying causes and overall health.
Management may involve lifestyle measures such as:
- Maintaining an appropriate weight
- Limiting alcohol
- Stopping smoking or vaping
- Improving sleep habits
- Addressing nasal obstruction where appropriate
Other treatments can include continuous positive airway pressure (CPAP), which delivers pressurised air through a mask to help keep the airway open during sleep.
Some patients may be suitable for an oral appliance fitted by an appropriately trained dentist, while surgery may be considered in selected cases where structural airway problems contribute to OSA.
Treatment should be individualised following appropriate assessments.
Frequently Asked Questions
What are the warning signs of sleep apnoea?
Common warning signs include loud snoring, pauses in breathing during sleep, waking gasping or choking, restless sleep, waking unrefreshed and excessive daytime sleepiness. Morning headaches, irritability, and problems with concentration or memory may also occur.
Can sleep apnoea cause daytime tiredness?
Yes. Daytime sleepiness and feeling tired or unrefreshed after sleep are recognised symptoms of obstructive sleep apnoea. Repeated breathing interruptions can fragment sleep even when you do not remember waking.
Who is at risk of sleep apnoea?
OSA can affect anyone, although risk increases with factors including age, excess body weight, certain airway anatomy, family history, alcohol use, and smoking. Men and post-menopausal women are also identified as groups with increased risk.
Does snoring always mean sleep apnoea?
No. Snoring can occur without sleeping apnoea. However, loud snoring accompanied by breathing pauses, gasping, choking, or significant daytime sleepiness should be discussed with a healthcare professional.
Can you sleep apnoea without knowing it?
Yes. Because breathing interruptions happen while you are asleep, you may have no memory of them. A partner or family member may notice the signs first.
Can a GP help with possible sleep apnoea?
Yes. A GP can assess your symptoms and general health and determine whether further investigation is appropriate. They may arrange or refer you for a sleep study or specialist assessment when needed.
The Bottom Line
The signs of sleep apnoea do not only happen at night.
Persistent tiredness, daytime sleepiness, poor concentration, morning headaches and irritability can sometimes be clued that your sleep is being repeatedly interrupted by breathing problems.
While loud snoring is common and does not automatically mean you have sleep apnoea, snoring combined with witnessed breathing pauses, gasping or significant sleep apnoea daytime symptoms is worth discussing with a GP.
A GP can review your symptoms and health history and, where appropriate, arrange further assessments such as a sleep study. Identifying the cause of ongoing sleep problems is an important step towards finding appropriate management and improving both sleep and daytime wellbeing.
