Overview

Sleep terrors, also known as night terrors, are a type of sleep disorder that causes sudden episodes of intense fear during sleep. They usually occur during deep, non-dream sleep and are most common in children, though adults can also be affected. During an episode, the person may appear awake but is often confused and difficult to comfort. Sleep terrors are generally harmless and are different from nightmares.

Symptoms

Symptoms of sleep terrors typically occur in the first part of the night and may be distressing to observe.

  • Sudden screaming, crying, or shouting during sleep

  • Intense fear or panic

  • Rapid heartbeat and breathing

  • Sweating and flushed skin

  • Sitting up in bed or thrashing movements

  • Confusion and inability to recognize others

  • Little or no memory of the episode the next morning

Causes

The exact cause of sleep terrors is not fully understood. They are thought to occur when the brain partially awakens from deep sleep. Factors that disrupt normal sleep patterns can trigger episodes, such as sleep deprivation, fever, illness, or stress. In some cases, sleep terrors may be linked to other sleep disorders or neurological conditions.

Risk Factors

Several factors increase the likelihood of experiencing sleep terrors.

  • Childhood, especially between ages 3 and 8

  • Family history of sleep terrors or other sleep disorders

  • Lack of adequate sleep

  • High stress or emotional distress

  • Fever or illness

  • Use of certain medications that affect the nervous system

Complications

Sleep terrors themselves are usually not dangerous, but complications can occur. Individuals may injure themselves during an episode by falling out of bed or hitting nearby objects. Recurrent sleep terrors can disrupt family sleep and cause anxiety for caregivers. In adults, frequent episodes may indicate an underlying sleep or mental health condition that requires evaluation.

Prevention

Prevention focuses on improving sleep quality and reducing triggers. Maintaining a regular sleep schedule and ensuring adequate sleep duration can help reduce episodes. Managing stress, treating underlying medical conditions, and creating a safe sleep environment are important. If sleep terrors are frequent, severe, or persist into adulthood, seeking medical advice helps identify underlying causes and appropriate management strategies.

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