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v2.2.0
HomeConditionsSleep & InsomniaSleepwalking
Mental Health Condition

Sleepwalking

To define Sleepwalking: Walking or performing complex activities while asleep, usually during deep sleep with no memory afterward.

Overview

Description

Sleepwalking, also known as somnambulism, is a non-rapid eye movement (NREM) sleep arousal disorder characterized by complex behaviors initiated during deep sleep, typically in the first third of the night. Individuals may sit up, walk around, or engage in other activities while remaining partially asleep, with a blank stare and minimal responsiveness to external stimuli. Episodes are often followed by amnesia for the event. Sleepwalking is more common in children but can occur in adults, where it is often associated with sleep deprivation, stress, or comorbid sleep disorders.

Prevalence

Occurs in approximately 10–30% of children at least once and in about 1–4% of adults.

Age of Onset

Most common in children aged 4–8; adult-onset cases are less common and often secondary to other conditions.

DSM-5 Code

307.46

ICD-10 Code

F51.3

By HeyPsych Contributor
Reviewed by the HeyPsych Medical Review Board
Reviewed by the HeyPsych Medical Review Board
Board-certified psychiatrists and mental health professionals
Medical Review Board
Published: August 15, 2025
Last Updated: February 20, 2026
Last Reviewed: February 20, 2026

Childhood Prevalence

Childhood Prevalence

Adult Prevalence

Adult Prevalence

Timing

Timing

Amnesia Common

Amnesia Common

Safety First

Safety First

Gentle Guidance

Gentle Guidance

Often Outgrown

Often Outgrown

Address Triggers

Address Triggers

Strong Genetic Link

Strong Genetic Link

This information about mental health conditions is for educational purposes only. If you believe you may be experiencing symptoms of a mental health condition, please consult with a qualified healthcare professional for proper evaluation and diagnosis.

Seeking Help for Sleepwalking?

If you recognize these symptoms in yourself or a loved one, know that help is available. Mental health conditions are treatable with options like Cognitive Behavioral Therapy, and early intervention can make a significant difference.
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