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Sleep Disorders

Sleep disorders are problems related to sleep. They are a set of alterations that occur in the different phases of sleep, preventing you from enjoying a proper, continuous and restful sleep. There are many different types of sleep disorders and these can be grouped into four main categories:

  • Problems falling asleep and staying asleep
  • Problems staying awake
  • Problems maintaining a regular sleep schedule
  • Unusual behaviour during sleep

What are the symptoms?

Some of the general symptoms of sleep disorders are:

  • Physical exhaustion
  • Low performance
  • Daytime sleepiness
  • Difficulty complying with professional, family or social obligations

On the other hand, there are specific symptoms that can occur, depending on the type of sleep disorder. Some are:

  • Sleepwalking – a state in which the person gets up and acts semi-consciously during sleep, without realising what they are doing, or remembering what they did whilst sleepwalking.
  • Night terrors – episodes of agitation due to fear that can be accompanied by sleepwalking.
  • Nightmares – unpleasant and frightening dreams that provoke a sudden awakening, both in children and adults.
  • Snoring

Common sleep disorders include:

  • Insomnia (difficulty falling asleep and staying asleep)
  • Narcolepsy (a neurological disorder that affects the control of sleep and wakefulness)
  • Sleep apnoea (disruptions and pauses in breathing during sleep)
  • Restless legs syndrome (unpleasant sensations in the legs, with an uncontrollable urge to move them)
  • Hypersomnia (excessive daytime sleepiness)
  • Parasomnias (sleep disorders that cause arousals from REM sleep, e.g. nightmares and sleepwalking)

What causes it?

The causes of sleep disorders vary and can be due to several causes, such as:

  • Allergies and breathing problems
  • Chronic pain
  • Stress
  • Anxiety and other psychiatric disorders
  • Nocturia (the frequent urge to urinate)
  • Underlying health conditions (e.g. restless leg syndrome is often associated with Parkinson’s disease)
  • Environmental factors (e.g. light, noise or extreme temperatures)
  • Night shift work
  • Medications
  • Aging (older age is associated with the development of certain sleep disorders)

What is the treatment?

The treatment for sleep disorders depends on the type of disorder the patient has. In general, specialists recommend avoiding taking medications that may cause insomnia or avoid consuming caffeine, sugary drinks, alcohol, and tobacco. Also, it is advisable to shorten the time you are in bed only when you go to sleep. That is, it is important not to watch television, read, or eat whilst in bed.

Depending on your sleep disorder, a specialist may require you to enter a sleep lab to analyse your patterns of sleep. In a sleep lab, you are connected to monitors that track the heart, brain, and breathing whilst you sleep.

Here are some specific treatments for common sleep disorders:

  • Insomnia – improving ‘sleep hygiene’, such as avoiding caffeine, exercising regularly, keeping your bedroom dark and quiet.
  • Snoring – sleeping on your side, quitting smoking, treating any underlying allergies.
  • Sleep apnoea – you may require a CPAP machine whilst you sleep, which keeps your airways open.
  • Narcolepsy – having scheduled naps and medication to keep you awake during the day.
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