Sleepwalking

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Sleepwalking
Classification & external resources
ICD-10 F51.3
ICD-9 307.4

Sleepwalking (also called noctambulism or somnambulism), under the larger category of parasomnias, is a sleep disorder where the sufferer engages in activities that are normally associated with wakefulness while asleep or in a sleeplike state.

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[edit] Explanation

Sleepwalking can affect people of any age. It generally occurs when an individual awakes suddenly from Slow Wave Sleep (SWS or sometimes referred to as "deep sleep"), causing the sleepwalking episode.[citation needed] In children and young adults, up to 25% of the night is spent in SWS.[citation needed] However this decreases as the person ages until none can be measured in the geriatric individual.[citation needed] For this reason, children and young adults (or anyone else with a high amount of SWS), are more likely to be woken up and, for the same reasons, they are witnessed to have many more episodes than the older individuals.[citation needed]

Statistics
  • 18% of the world's population is prone to sleepwalking.[citation needed]
  • Somewhere between 1% and 16.7% of U.S. children sleepwalk, and juveniles are seen to be those more prone to the activity.[citation needed]
  • One study showed that the highest prevalence of sleepwalking was 16.7% for children of 11 to 12 years of age.[citation needed]
  • Males are seen to be more likely to sleepwalk than females.[citation needed]

Activities such as eating, bathing, dressing, or even driving cars and whistling have also been recorded as taking place while the subjects are technically asleep[citation needed]. Contrary to popular belief, most cases of sleepwalking do not consist of walking around (without the conscious knowledge of the subject). Most cases of somnambulism occur when the person is awakened (something or someone disturbs their SWS), the person may sit up, look around and immediately go back to sleep. But these kinds of incidences are rarely noticed or reported unless recorded in a sleep clinic.[citation needed]

Sleepwalkers engage in their activities with their eyes open so they can navigate their surroundings, not with their eyes closed and their arms outstretched as parodied in cartoons and Hollywood productions. The victims' eyes may have a glazed or empty appearance and if questioned, the subject will be slow to answer and will be unable to respond in an intelligible manner.

[edit] Hazards

Sleep walkers are more likely to endanger themselves than anyone else. When sleepwalkers are a danger to themselves or others (for example, when climbing up or down steps or trying to use a potentially dangerous tool such as a stove or a knife) steering them away from the danger or even waking them is advisable. It has even been reported that people have fallen out of windows, and died, or were injured as a result[citation needed]. Sleepwalking should not be confused with Psychosis.

[edit] Trivia

[edit] See also

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