What are sleep disorders?

There are many types of common and complex sleep disorders, from troublesome snoring and REM sleep behaviour, to sleep apnoea, narcolepsy and parasomnias.

We treat all sleep disorders, most commonly sleep apnoea. This condition causes interrupted breathing during sleep and it is frequently linked to obesity, unhealthy lifestyle choices and diabetes.

In patients with chronic sleep disorders such as narcolepsy, our specialists create tailored programmes of care to reduce symptoms and significantly improve quality of life.

Sleep disorders symptoms

There are two types of interrupted breathing associated with apnoea:


This is when the throat muscles and soft tissue relax so much that they collapse and block the airway. It is classed as apnoea when this blockage lasts for more than 10 seconds at a time.


This is when the blockage (as in apnoea, above) is partial, with a greater than 50 per cent reduction in airflow.

These two symptoms can further cause:

  • extreme tiredness during the day, due to interrupted sleep. In turn, this can cause:
    • irritability
    • poor concentration
  • sore or dry throat, particularly on waking up
  • anxiety and depression
  • loss of sex drive and, in men, impotence

People with this condition can suffer with repeated episodes of apnoea and hypopnoea when in a deep sleep. These will usually cause a patient to rise from a deep sleep into a lighter state of wakefulness so the body can restore normal breathing.

Other common sleep disorders and parasomnias (including insomnia, sleep walking and talking) can run in families, or be triggered by stress, other illnesses and medication.

What causes sleep disorders?

Sleep apnoea

Sleep apnoea has a number of potential causes or risk factors, most commonly:

  • obesity
  • being over 40 years old
  • excessive alcohol consumption
  • smoking
  • taking sedatives, or medication with a sedative effect
  • diabetes

It is also more common in men than women and in those with a family history of the condition.

Other sleep disorders

In many other sleep disorders, the exact causes are unknown. However, effective treatments and management can help sufferers of insomnia, restless leg syndrome, circadian disorders, and other sleep conditions, to lead a full and active life.


Diagnosing sleep disorders

Sleep patterns

Specialists need to observe and monitor a person’s sleep patterns in order to accurately diagnose sleep apnoea and other common disorders.

Often people who are concerned about a sleep disorder will first ask their partner to observe them while they’re asleep. If you suspect interrupted breathing, your GP will start by asking you a series of questions about your sleep patterns and how you feel during the day. You may also be asked to wear a monitoring device at home, which records information that can be assessed by sleep specialists.


To get a more detailed view of your breathing during sleep, we may perform a polysomnography – also known as a sleep study. This simply involves small electrodes being placed on your face and head, and bands around your tummy and chest. You’ll then be asked to sleep in a room for the night so the nurses can monitor the signals from the equipment.

Further tests

Other tests that may be carried out to diagnose a sleep disorder include:

  • electro-encephalography (EEG)
  • electromyography (EMG)
  • electrocardiography (ECG)
  • sound and video recording

Sleep studies

Our sleep experts can help diagnose a range of sleep disorders with a sleep study. Contact our team to learn more and to book an appointment.

Our sleep expert, Dr Allie Hare, explains what happens during a sleep study.

Sleep disorders treatment

Lifestyle changes

The most common form of treatment for all sleep disorders is lifestyle changes. If you are overweight, smoke, drink alcohol excessively or are under particularly high levels of stress, our specialists will work with you to help you lose weight, make simple changes and manage stress, anxiety and depression more effectively.

Continuous positive airway pressure (CPAP)

In cases of sleep apnoea where lifestyle changes are not effective, you may be treated with continuous positive airway pressure (CPAP). This involves sleeping with a mask on, through which a continuous supply of compressed air is delivered, to keep the throat from closing.

Our sleep expert, Dr Allie Hare, explains how a CPAP machine works to help with sleep apnoea.


In patients that suffer with sleep apnoea due to certain characteristics of the mouth, throat or jaw (such as enlarged tonsils or a small lower jaw), surgery may be recommended.

Discover our sleep medicine experts

Meet our team of leading sleep specialists. From sleep studies to advanced treatments, our experts are here to provide personalised care to help you sleep better