| Sleepwalking
(Somnambulism)
Is a Sleep Disorder characterized by
walking or other activity while seemingly still asleep. Sleepwalking
(Somnambulism) is a series of complex behaviors that are initiated during
slow wave sleep and result in walking during sleep. Sleepwalking is
a rapid eye movement (REM) behavior disorder occurring in the dream stage
of sleep. During this phase, the body releases a chemical that paralyzes
the body. However, those who sleepwalk do not have this chemical trigger,
hence the behavior.
Symptoms and Features:
- Ambulation (walking or moving about)
that occurs during sleep. The onset typically occurs in pre-pubertal
children.
- difficulty in arousing the patient
during an episode
- amnesia following an episode
- episodes typically occur in the first
third of the sleep episode
- polysomnographic monitoring demonstrates
the onset of an episode during stage 3 or 4 sleep
- other medical and psychiatric disorders
can be present but do not account for the symptom
- the ambulation is not due to other sleep
disorders such as REM sleep behavior disorder or sleep terrors.
- Fatigue (which is not the same as
drowsiness),
- stress and
- anxiety
The normal sleep cycle involves distinct
stages from light drowsiness to deep sleep. Rapid eye movement (REM) sleep
is a different type of sleep, in which the eyes move rapidly and vivid
dreaming is most common. During a night, there will be several cycles of
non-REM and REM sleep. Sleep walking (somnambulism) most often occurs
during deep non-REM sleep (stage 3 or stage 4 sleep) early in the night.
It can occur during REM sleep near morning.
In children, the cause is usually unknown
but may also be related to fatigue, prior sleep loss, or anxiety. In
adults, sleep walking is usually associated with a disorder of the mind
but may also be seen with reactions to drugs and/or medications and
alcohol, and medical conditions such as partial complex seizures. In the
elderly, sleep walking may be a symptom of an organic brain syndrome or
REM behavior disorders.
The sleep walking activity may include
simply sitting up and appearing awake while actually asleep, getting up
and walking around, or complex activities such as moving furniture, going
to the bathroom, dressing and undressing, and similar activities. Some
people even drive a car while actually asleep. The episode can be very
brief (a few seconds or minutes) or can last for 30 minutes or longer.
One common misconception is that a sleep
walker should not be awakened. It is not dangerous to awaken a sleep
walker, although it is common for the person to be confused or disoriented
for a short time on awakening. Another misconception is that a person
cannot be injured when sleep walking. Actually, injuries caused by such
things as tripping and loss of balance are common for sleep walkers.
Sleep walking occurs at any age, but it
occurs most often in children aged 6 to 12 years old. It may occur in
younger children, in adults, or in the elderly, and it appears to run in
families. Sleepwalking
(somnambulism) is fairly common, especially among children. An estimated
15 percent of all children between the ages of 5 and 12 have walked in
their sleep at least once, and most outgrow the disorder. Typically, the
child (or adult) sleepwalker sits up, gets out of bed, and moves about in
an uncoordinated manner. Less frequently, the sleepwalker may dress, open
doors, eat, or go to the bathroom without incident and usually will avoid
obstacles. But sleepwalkers don't always make their rounds in safety. They
sometimes hurt themselves, stumbling against furniture and losing their
balance, going through windows, or falling down stairs.
In children, sleepwalking is not believed
to be influenced by psychological factors.
In adults, it could indicate a personality disturbance.
Usually, it is enough for parents of
sleepwalkers to provide their children with emotional support. They should
also lock windows and doors and make sure the child does not sleep near
stairways and potentially dangerous objects. For severe cases, a doctor
may prescribe drugs.
Medical reports show that about 18% of the
population are prone to sleepwalking. It is more common in children than
in adolescents and adults. Boys are more likely to sleepwalk than girls.
The highest prevalence of sleepwalking was 16.7% at age 11 to 12 years of
age. Sleepwalking can have a genetic tendency. If a child begins
to sleepwalk at the age of 9, it often lasts into adulthood.
For some, the episodes of sleepwalking
occur less than once per month and do not result in harm to the patient or
others. Others experience episodes more than once per month, but not
nightly, and do not result in harm to the patient or others. In its most
severe form, the episodes occur almost nightly or are associated with
physical injury. The sleepwalker may feel embarrassment, shame, guilt, anxiety
and confusion when they are told about their sleepwalking behavior.
Amnesia is another danger that usually
follows a sleepwalking episode. Sleepwalkers usually remember little to
nothing. But there are times sleepwalkers have a vague memory of an
episode where they think they were being burned, buried alive, caught
under a roof or trying to escape a dangerous situation. Sleepwalking
primarily occurs in young children and is more prevalent in boys than
girls.
Sleepwalking episodes can range from
sitting up in bed to walking, and can even lead to frantic attempts to
escape as if threatened or fleeing.
During an episode, a sleepwalker exhibits
behaviors such as sitting up with glassy eyes, picking at the blankets,
making body movements and walking around the house. Sleepwalkers may also
urinate, defecate or avoid looking at another person who attempts to
communicate with them. Exiting through a window is not an uncommon
practice, either.
Homicide or suicide during sleepwalking has
rarely been reported when a person has tried to awaken a sleepwalker.
Sleepwalking can be treated with drugs, but
hypnosis has also proven to be successful on a short-term basis.
An important component in dealing with this
disorder is to make the environment as safe as possible, such as having
sleepwalker's bedroom on the ground floor, removing hazardous items from
the house, locking windows and placing an alarm on the bedroom door.
It is very important that if the
sleepwalker exits the house, or is having frequent episodes and injuries
are occurring -- DO NOT delay, it is time to seek professional help.
In a few instances, sleepwalking can result
in violent behavior. It is very important that a chronic sleepwalker seek
professional help.
Treatment:
There are some things a sleepwalker can do:
- Make sure you get plenty of rest; being
overtired can trigger a sleepwalking episode.
- Develop a calming bedtime ritual. Some
people meditate or do relaxation exercises; stress can be another
trigger for sleepwalking.
- Remove anything from the bedroom that
could be hazardous or harmful.
- The sleepwalker's bedroom should be on
the ground floor of the house. The possibility of the patient opening
windows or doors should be eliminated.
An assessment of the sleepwalker should
include a careful review of the current medication so that modifications
can be made if necessary.
Hypnosis has been found to be helpful for
both children and adults.
An accurate psychiatric evaluation could
help to decide the need for psychiatric intervention.
Benzodiazepines have been proven to be
useful in the treatment of this disorder. A small dose of diazepam or
lorazepam eliminates the episodes or considerably reduces them.
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