II. Epidemiology
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Prevalence
- Children: 15-17% of normal children ages 4 to 15 years (peaks at ages 8-12 years)
- Adults: 4%
- Gender Predominance
- More common in boys than in girls
- Inherited
- One parent with Sleep Walking history confers 45% risk for a child
- Two parents with Sleep Walking history confers 45% risk for a child
III. Definitions
- Somnambulism: Sleep Walking
- Somniloquy: Sleep Talking
IV. Pathophysiology
- Occurs during first 3 hours of sleep
- Occurs during non-REM Sleep: Stages 3 and 4
V. Risk Factors
- Family History in first degree relative (see above)
- Obstructive Sleep Apnea
- Sleep deprivation
- Gastroesophageal Reflux disease
- Acute stress
VI. Signs
- Eyes are open but stare is blank
- Speech is mumbled, slurred and unintelligible
- Unable to awaken during episode
- Patient has no memory of the event
- Not well coordinated, but can do semi-purposeful acts
- Dressing
- Open and close doors
- Turn on and off lights
- Timing
- Onset during first half of sleep
- Lasts for 30 seconds to 30 minutes
- Rapidly returns to sleep
VII. Associated Conditions: Other Parasomnias
VIII. Differential Diagnosis
- Partial complex Seizures occurring during sleep
- REM behavior disorder
- Night Terrors
- Malingering
- Dissociative phenomena
- Medication adverse effect
- Illicit Drug use
IX. Management
- See Prompted Sleep Awakening Technique
- Reassure parents (See Course below)
- Avoid Fatigue (leads to Sleepwalking)
- Ensure sufficient sleep
- Provide regular sleep-wake schedule
- Maintain a consistent bedtime and awakening time
- During episode
- Lead child back to bed
- Minimize interventions with child
- Do not shake or slap child
- Do not shout at child
- Stop by bathroom if needed
- Once in bed, episode may end
- Protect from accidents
- Gates across stairs
- Special locks on outside doors and windows
- No bunk-bed sleeping
- Situate bedroom on first floor of home
X. Course
- Sleep Walking spontaneously stops with adolescence
XI. Followup: Indications to call or return to clinic
- Signs of Seizure during episode
- Drooling
- Jerking or stiffening
- Persistent frequent or prolonged episodes
- Twice weekly despite prompted awakenings for 7 days
- Episodes last longer than 30 minutes
- Child does something dangerous during episode
- Episodes occur during second half of night
- Child with daytime fears