25 Sleep Disorders: Complete List, Symptoms, Causes and Treatments (2026 Guide)

 

25 Sleep Disorders: Complete List, Symptoms, Causes and Treatments (2026 Guide)

25 Sleep Disorders Explained

Complete list of the most common sleep disorders, symptoms and categories

Insomnia Disorders

  • Chronic Insomnia
  • Acute Insomnia
  • Behavioral Insomnia

Breathing Disorders

  • Obstructive Sleep Apnea
  • Central Sleep Apnea
  • Sleep Hypoventilation

Hypersomnia

  • Narcolepsy Type 1
  • Narcolepsy Type 2
  • Idiopathic Hypersomnia

Circadian Rhythm

  • Delayed Sleep Phase Disorder
  • Advanced Sleep Phase Disorder
  • Shift Work Disorder
  • Jet Lag Disorder

Movement Disorders

  • Restless Legs Syndrome
  • Periodic Limb Movement Disorder

Parasomnias

  • Sleepwalking
  • Sleep Talking
  • Night Terrors
  • REM Sleep Behavior Disorder
  • Nightmare Disorder

Other Sleep Disorders

  • Sleep Bruxism
  • Sleep Paralysis
  • Nocturnal Eating Syndrome
  • Exploding Head Syndrome
  • Revenge Bedtime Procrastination
Fact: Sleep specialists have identified more than 80 sleep disorders, but these 25 conditions represent the most commonly diagnosed problems affecting sleep quality worldwide.
Infographic showing the 25 most common sleep disorders categorized by insomnia, breathing disorders, hypersomnia, circadian rhythm disorders, movement disorders and parasomnias.

Sleep disorders affect millions of people worldwide, yet most individuals don’t realize that their nightly struggles may actually be symptoms of a diagnosable sleep condition.

While many people believe sleep problems only mean insomnia, sleep medicine specialists have identified more than 80 different sleep disorders. However, around 25 core sleep disorders account for the vast majority of cases.

Understanding these disorders is the first step toward restoring healthy sleep, improving mental health, and protecting long-term wellbeing.

If you are new to the topic, you may want to start with our comprehensive guide on types of sleep disorders and how they affect sleep cycles.

In this in-depth guide you will discover:

  • The complete list of 25 sleep disorders
  • Symptoms doctors use for diagnosis
  • Common causes and risk factors
  • Treatment options and lifestyle solutions

25 Most Common Sleep Disorders (Quick Overview)

Understanding the different types of sleep disorders can help identify the root cause of sleep problems.

Insomnia Disorders

  • Chronic Insomnia
  • Acute Insomnia
  • Behavioral Insomnia

Breathing Disorders

  • Obstructive Sleep Apnea
  • Central Sleep Apnea
  • Sleep Hypoventilation

Hypersomnia

  • Narcolepsy Type 1
  • Narcolepsy Type 2
  • Idiopathic Hypersomnia

Circadian Rhythm

  • Delayed Sleep Phase Disorder
  • Advanced Sleep Phase Disorder
  • Shift Work Disorder
  • Jet Lag Disorder

Movement Disorders

  • Restless Legs Syndrome
  • Periodic Limb Movement Disorder

Parasomnias

  • Sleepwalking
  • Sleep Talking
  • Night Terrors
  • REM Sleep Behavior Disorder
  • Nightmare Disorder

Other Sleep Disorders

  • Sleep Bruxism
  • Sleep Paralysis
  • Nocturnal Eating Syndrome
  • Exploding Head Syndrome
  • Revenge Bedtime Procrastination

What Are Sleep Disorders?

Sleep disorders are medical conditions that interfere with normal sleep patterns. They can affect how quickly you fall asleep, how long you stay asleep, or the quality of sleep your brain receives.

When untreated, sleep disorders can increase the risk of:

  • Heart disease
  • Depression and anxiety
  • Memory problems
  • Hormonal imbalance
  • Weakened immune system

According to sleep researchers, poor sleep quality is now considered one of the biggest health risks of modern lifestyles.

Quick Overview: 25 Sleep Disorders List

Category Sleep Disorder Main Symptom
InsomniaChronic InsomniaDifficulty falling asleep
InsomniaAcute InsomniaShort-term sleep disruption
InsomniaBehavioral InsomniaPoor sleep habits
BreathingObstructive Sleep ApneaBreathing interruptions
BreathingCentral Sleep ApneaBrain fails to signal breathing
BreathingSleep HypoventilationSlow breathing during sleep
HypersomniaNarcolepsy Type 1Sudden sleep attacks
HypersomniaNarcolepsy Type 2Excessive daytime sleepiness
HypersomniaIdiopathic HypersomniaExtreme sleepiness
Circadian RhythmDelayed Sleep Phase DisorderLate sleep schedule
Circadian RhythmAdvanced Sleep Phase DisorderVery early sleep cycle
Circadian RhythmShift Work DisorderSleep problems from work schedule
Circadian RhythmJet Lag DisorderTravel-related sleep disruption
MovementRestless Legs SyndromeUrge to move legs
MovementPeriodic Limb Movement DisorderInvoluntary limb movements
ParasomniaSleepwalkingWalking during sleep
ParasomniaSleep TalkingTalking while asleep
ParasomniaNight TerrorsExtreme fear during sleep
ParasomniaREM Sleep Behavior DisorderActing out dreams
ParasomniaNightmare DisorderFrequent disturbing dreams
OtherSleep BruxismTeeth grinding
OtherSleep ParalysisTemporary inability to move
OtherNocturnal Eating SyndromeEating during the night
OtherExploding Head SyndromeLoud noise sensation
OtherRevenge Bedtime ProcrastinationDelaying sleep intentionally

Complete Sleep Disorders List and Main Symptoms

Sleep Disorder Category Main Symptom
Chronic InsomniaInsomniaDifficulty falling or staying asleep
Obstructive Sleep ApneaBreathingBreathing pauses
NarcolepsyHypersomniaSudden sleep attacks
Restless Legs SyndromeMovementUrge to move legs
SleepwalkingParasomniaWalking while asleep
Sleep ParalysisOtherTemporary inability to move

1. Insomnia Disorders

Insomnia is the most common sleep disorder globally. People with insomnia struggle to fall asleep, stay asleep, or wake up feeling refreshed.

Chronic Insomnia

Chronic insomnia occurs when sleep difficulties happen at least three nights per week for more than three months.

Learn more treatment options in our guide: Insomnia treatment methods that actually work.

Acute Insomnia

Often triggered by stress, travel, illness, or emotional events. This type usually resolves within a few days or weeks.

Behavioral Insomnia

Common in children and adults with unhealthy bedtime habits such as screen exposure or irregular sleep schedules.

2. Sleep Breathing Disorders

Breathing disorders during sleep can be extremely dangerous because they reduce oxygen supply to the brain.

Obstructive Sleep Apnea

This condition occurs when throat muscles collapse and block airflow during sleep.

Symptoms include:

  • Loud snoring
  • Gasping during sleep
  • Morning headaches
  • Severe daytime fatigue

Central Sleep Apnea

Unlike obstructive apnea, this disorder occurs when the brain temporarily stops sending signals to breathing muscles.

Sleep Hypoventilation

Breathing becomes shallow or slow, causing carbon dioxide levels to rise.

3. Hypersomnia Disorders

Hypersomnia refers to conditions where people experience excessive sleepiness even after long sleep periods.

Narcolepsy Type 1

Narcolepsy is a neurological disorder that disrupts the brain’s control of sleep and wakefulness.

Narcolepsy Type 2

This form causes daytime sleep attacks but without the muscle weakness known as cataplexy.

Idiopathic Hypersomnia

Individuals feel extremely tired during the day despite sleeping 9–11 hours at night.

4. Circadian Rhythm Sleep Disorders

Your circadian rhythm is the internal biological clock that regulates sleep timing.

Delayed Sleep Phase Disorder

People naturally fall asleep very late (often after 2 AM) and struggle to wake early.

Advanced Sleep Phase Disorder

The opposite pattern — individuals feel sleepy extremely early in the evening.

Shift Work Disorder

Common among healthcare workers, pilots, and night shift employees.

Jet Lag Disorder

Occurs when traveling across multiple time zones.

5. Sleep Movement Disorders

Restless Legs Syndrome

This condition creates an uncontrollable urge to move the legs, particularly during rest.

Periodic Limb Movement Disorder

Involuntary leg or arm movements repeatedly interrupt sleep.

6. Parasomnias

Parasomnias involve unusual behaviors during sleep.

  • Sleepwalking
  • Sleep talking
  • Night terrors
  • REM sleep behavior disorder
  • Nightmare disorder

Other Rare Sleep Disorders

  • Sleep bruxism
  • Sleep paralysis
  • Nocturnal eating syndrome
  • Exploding head syndrome
  • Revenge bedtime procrastination

If this last condition sounds familiar, you may want to read our detailed article about why people delay sleep even when exhausted.

When Should You See a Doctor?

You should consider consulting a sleep specialist if:

  • Sleep problems persist longer than 3 weeks
  • You feel exhausted every day
  • You fall asleep unexpectedly during the day
  • Your partner notices breathing pauses during sleep

Professional diagnosis often involves sleep studies, sleep diaries, and neurological evaluation.

Final Thoughts

Sleep disorders are far more common than most people realize. Understanding the signs and symptoms is the first step toward restoring healthy sleep.

Fortunately, modern sleep medicine offers effective treatments ranging from behavioral therapy and lifestyle adjustments to medical therapies.

If you suspect a sleep disorder, early intervention can dramatically improve both sleep quality and overall health.

Continue reading our series:

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