Sleep terrors, also called night terrors, are episodes of intense fear, screaming, autonomic arousal, and confusion that arise from deep non-REM sleep. They are most common in children but can also occur in adults. During an episode, the person may sit up suddenly, look terrified, sweat, breathe rapidly, and appear inconsolable—yet often has little or no memory of the event the next morning. ^[1][2][3]

Overview

Sleep terrors are classified as parasomnias. They are different from nightmares, which arise from REM sleep and are usually remembered. In a sleep terror, the person is caught in a state of partial arousal: not fully asleep and not fully awake. This is why attempts to reason with the person often do not work during the episode. ^[1][2]

Symptoms

Typical features include sudden screaming, panicked expression, rapid heartbeat, sweating, confusion, and resistance to comfort. The person may thrash, sit upright, or appear frightened without recognizing caregivers. Episodes usually occur in the first part of the night during deep sleep. ^[1][2][3]

Causes and risk factors

Sleep deprivation, fever, stress, irregular schedules, some medications, and sleep-disrupting conditions can increase the likelihood of episodes. In children, a family tendency toward parasomnias may be seen. In adults, recurrent sleep terrors may warrant evaluation for underlying sleep disorders or mental health factors. ^[1][2]

Diagnosis

Diagnosis often depends on the history of the episodes, their timing, behavior during the event, and the absence of dream recall typical of nightmares. Most children do not need extensive testing. However, polysomnography or specialist assessment may be considered if episodes are frequent, dangerous, atypical, or associated with suspected seizures or another sleep disorder. ^[1][2]

Treatment options

Treatment focuses first on safety, regular sleep, and reduction of triggers. Many children need reassurance more than medication. If episodes are frequent or severe, a clinician may advise strategies such as scheduled awakenings or further evaluation of associated sleep issues. Adult cases may require a broader diagnostic approach. ^[1][2][3]

Complications and follow-up

The main risks are injury, disrupted family sleep, and anxiety about recurrence. Some episodes involve getting out of bed or striking nearby objects, which makes environmental safety important. Persistent adult-onset or injurious cases should not simply be normalized. ^[1][2]

When should a doctor be consulted?

Medical review is appropriate when episodes are frequent, violent, begin in adulthood, cause injury, occur multiple times per night, or raise concern for seizures, sleepwalking, or another sleep disorder. ^[1][2]

Living with the condition and monitoring

Parents often benefit from knowing that the child is not “having a psychological breakdown” during the event. Maintaining a calm response, avoiding forced awakening when unsafe agitation is absent, and tracking the timing of episodes can help management. ^[1][2]

Prognosis and follow-up

Many children outgrow sleep terrors over time, especially when sleep routines improve and triggers are reduced. Prognosis depends on age, frequency, safety issues, and the presence of associated sleep disorders. ^[1][2]

FAQ

Are sleep terrors the same as nightmares?

No. Sleep terrors arise from deep non-REM sleep and are often not remembered, whereas nightmares typically occur during REM sleep and are usually recalled. ^[1][2]

Are sleep terrors dangerous?

They can be, mainly because of injury risk during agitated movements or attempts to leave the bed. ^[1][2]

Should I wake the child during an episode?

Usually the safer approach is to protect the child from injury and wait for the episode to pass rather than trying to force full awakening. ^[1][2]

Can adults have sleep terrors too?

Yes. Although they are more common in children, adults can experience them, and persistent adult-onset episodes merit assessment. ^[1][2]

When should I see a doctor?

When episodes are frequent, violent, cause injury, begin in adulthood, or seem atypical. ^[1][2]