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Parasomnias are disorders that disrupt sleep. They include nightmares, sleepwalking, sleep talking and sleep terrors (night terrors). Parasomnias are far more common in children than in adults. Most of the time parasomnias only happen occasionally and are nothing to worry about. If your child has frequent parasomnias—or they are negatively impacting his waking life—it may be time to see a doctor.

The Parasomnias

  • Nightmares: Everyone has nightmares sometimes. These vivid, scary dreams are especially common for kids, who often have trouble falling back asleep after waking from one. They are a normal part of childhood development that may begin as early as 18 months of age.
  • Sleepwalking: Sleepwalking, or somnambulism, most often occurs in children between the ages of 5 and 12.  Aside from nightmares, it is the most well known of the parasomnias. It is more common in boys and usually goes away by adolescence. Contrary to popular belief, it's not dangerous to wake a sleepwalker.
  • Sleep talking: Sleep talking, or somniloquy, is a parasomnia in which a child talks during sleep. Like sleepwalking, sleep talking affects more boys than girls. As with the other parasomnias, sleep talking usually doesn't usually last long and often goes away by the early teen years.
  • Sleep terrors: Sleep terrors, also known as night terrors, are perhaps the most frightening of the parasomnias. Children with sleep terrors may sweat, scream or sit up in bed during an episode. Sleep terrors are not nightmares. Instead, unlike nightmares, which occur during REM sleep, sleep terrors happen during non-REM sleep. A child waking from a sleep terror usually can't remember why he was afraid. Sleep terrors may last for up to 20 minutes. Fortunately, they are rare and only affect between 1 and 6% of children.


Parasomnias may be genetic, as they often run in families. Some parasomnias can be the result of a brain disorder or caused by other sleep disorders, including sleep apnea or certain medications.

Tests & Diagnosis

Tests & Diagnosis

Parasomnias are some of the most common sleep disorders in children. Despite that, researchers know little about the neurological and physiological systems behind them. In most cases, nightmares, sleepwalking, sleep talking and sleep terrors (night terrors) go away on their own by early adolescence.

A doctor may perform a physical exam to rule out any other disorders or diseases that may be behind your child's parasomnia. A psychological exam can sometimes identify the reasons for certain parasomnias. A recent U.K. study found that kids who are bullied at school have more nightmares than their peers.

Your child's doctor may order a sleep study (polysomnography) as well. During a sleep study, your child will stay overnight in a sleep lab. Doctors will use sensors and cameras to track your child's brain waves, heartbeat and eye movements, among other things.



Parents diagnose most parasomnias in children. Parasomnias are a normal part of early childhood development and usually aren’t a cause for concern. If your child has frequent parasomnias that affect his wakefulness during the day or cause him to harm himself or others, he may need treatment.

Most of the time, kids with parasomnias don't need any treatment at all. Scheduling a regular bedtime routine or managing your child’s stress can help. Parasomnias usually diminish over time and are rarely a problem by adolescence. For some kids, the parasomnia is so disruptive to their lives or the operation of the family, certain treatments may help. The treatment will depend on the type and severity of your child's parasomnia.

  • Nightmares: Childhood nightmares are normal but, for some kids, there may be a psychological reason for their bad dreams. Interventions such as behavioral cognitive therapy, relaxation and hypnosis may help children with nightmares.
  • Sleepwalking: Most of the time, interventions work better than treatments for sleepwalking. Despite what you may have heard, it's not dangerous to wake a sleepwalking child. If you do, remember to be gentle as she will probably be disoriented or confused. Keep areas near the bed free from clutter and dangerous objects. Sometimes doctors will prescribe tranquilizers, which can help reduce the number of episodes.
  • Sleep talking: Treatment isn't usually needed for sleep talking children. If it persists over a long period of time, it may be due to stress or anxiety. As with nightmares, behavioral interventions may help.
  • Sleep terrors: Sleep terrors usually go away by the time a child reaches 5 years of age. If they don't, or are frequent and severe, behavioral therapies can help. Very rarely, doctors will prescribe medications such as benzodiazepines or certain antidepressants to treat sleep terrors.




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What are parasomnias?

Parasomnias are a number of different disorders that disrupt a child’s sleep. They include nightmares, sleepwalking, sleep talking and sleep terrors (night terrors).

How common are parasomnias?

Nearly all kids have a parasomnia, especially during early childhood. Most parasomnias go away as a child ages, usually disappearing almost completely by adolescence.

How can I tell if my child has a parasomnia?

Most parasomnias are obvious. If your child walks or talks in his sleep, he has a parasomnia. Your child will usually let you know if she has had a nightmare. Kids with sleep terrors may bolt upright in bed, eyes wide, screaming and sweating. Because of its symptoms, sleep terrors are probably the most unsettling parasomnia—especially for parents. Children with sleep terrors rarely remember what frightened them.

Other signs of parasomnias in children include:

  • Suddenly waking disoriented and confused (nightmares and sleep terrors)
  • Performing complex tasks while asleep, such as walking, running or talking
  • Grinding teeth while sleeping
  • Sleep paralysis

What causes parasomnias?

Researchers still don’t know the physiological reasons behind most parasomnias. Stress may be a factor in certain kinds, such as nightmares and sleep terrors.

How are parasomnias diagnosed?

Parents diagnose the vast majority of parasomnias themselves. A physical or psychological exam or a sleep study can identify contributing factors.

What are the treatments for parasomnias?

Parasomnias rarely need any treatment. In some cases, certain medications or behavioral interventions such as cognitive therapy can help.

What is the prognosis for children with parasomnias?

Nearly all children outgrow their particular parasomnia. Even kids with severe parasomnias usually go on to lead healthy lives.

I heard that it’s dangerous to wake a sleepwalker—is that true?

No, it’s perfectly safe to wake your child and lead her back to bed. Make sure you remove anything that can be dangerous from underfoot or near the bed, though.

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