Tag: Brain

Narcolepsy – A Rare Sleep Disorder

Narcolepsy, a relatively rare sleep disorder, causes people to fall asleep when they do not want to. This is caused by a neurological disorder. The brain sends signals to the body that are sleep inducing; however, they are sent at inappropriate and unpredictable times. Often it happens when a person is involved in a quiet activity, such as watching a movie or during a meeting. Sometimes a person with this sleep disorder falls asleep while driving, which is obviously extremely dangerous. Others fall asleep while they are eating or talking. The overwhelming need to sleep can come at any hour of the day during any activity.

People suffering with narcolepsy often do not realize how sleepy they are, nor how often they fall asleep. It is often a family member, friend or coworker that convinces them that they need to seek medical help for their sleep disorder.

Narcolepsy has five main symptoms. These are excessive daytime sleepiness, insomnia and fragmented sleep, sleep paralysis, cataplexy and hypnagogic hallucinations. Some people with this sleep disorder experience only one symptom but others can experience all five.

Excessive daytime sleepiness is generally the first symptom to appear. Everyone with narcolepsy has this symptom. The feeling of needing to sleep is so strong that sufferers are unable to fend it off, regardless of how hard they try. These sleep attacks, as they are usually called, can happen several times and last for five to ten minutes.

Insomnia and fragmented sleep are a very common symptom of this sleep disorder. People with narcolepsey often have a very difficult time falling asleep at night, even though they fall asleep easily throughout the day. When they do fall asleep at night they wake up often and do not follow a typical REM / non REM sleep pattern.

Sleep paralysis occurs in about half of the people that suffer from this sleep disorder. For several minutes before falling to sleep or waking up, the person with this symptom cannot talk or move.

The loss of muscle function while awake is cataplexy. These episodes are usually very short in length. Over half of the people with narcolepsy experience this symptom of this sleep disorder. They are caused by a part of REM not functioning correctly. Often, episodes are brought on by anger, laughter or any other strong emotion. Sometimes knees buckle, necks and jaws become weak or the person may fall to the ground. Even though the person looks like they are asleep and cannot talk, they are fully awake and aware of what is happening.

A hypnagogic hallucination is experiencing very vivid and often frightening sounds, images or physical sensations. These occur from dreams just before the person is falling asleep or waking up. It is very difficult for a person with this sleep disorder to distinguish between the dream and reality. These hallucinations often have very dangerous themes and are extremely frightening. Often they are accompanied by sleep paralysis.

There are also several lesser symptoms of narcolepsy. These include blurred vision, migraine headaches, memory or concentration problems and automatic behavior. An apostate of automatic behavior can last for several minutes. During that time a person with this sleep disorder will perform a routine task. The task is often done incorrectly, such as placing a turkey in the dishwasher or writing past the end of a page.

Narcolepsy can be diagnosed and treated with various drugs. If left untreated this sleep disorder can ruin a person’s life.

Children With the Sleep Disorder of Sleepwalking

The sleep disorder of sleepwalking, also known as somnambulism, affects approximately 14% of school-age children between five and twelve years old at least once. Approximately one quarter of the children with this sleep disorder have more frequent episodes. Sleepwalking is more common in boys then it is in girls. Most children that sleepwalk outgrow the symptoms of this sleep disorder by adolescence as their nervous systems develop.

In children this sleep disorder is thought to be the result of the immaturity of the brain’s sleep / wake cycle. Normally the entire brain wakes up at the same time. However, in the case of a sleepwalker, the entire brain does not wake up together. The portion that is responsible for mobility wakes up while the portion responsible for cognition and awareness stays asleep. The child is actually in a deep state of sleep.

With this sleep disorder the brain remains partially asleep but the body is able to move. It is common for the sleepwalker to get out of bed and walk around. Sometimes they get dressed or go outside. Even though the sleepwalker’s eyes are open and they see what they are doing, their expression remains blank. They do not respond to conversation or their name being called. A sleepwalker’s movements usually appear clumsy. It is not uncommon for them to trip over furniture or knock over things as they move around. A sleepwalking episode usually happens one to two hours after the child goes to sleep. Most of these episodes last for fifteen minutes or less, but some can last for an hour or more.

This sleep disorder in children is usually outgrown and treatment is not generally necessary. In most cases, a parent gently guiding the child back to bed is all that is needed. There is not any need to wake the child.

However, there is about 1% of the population that sleepwalk as adults. Adults that have this sleep disorder did not necessarily have it as a child. In adults a sleepwalking episode can be triggered by stress, anxiety, sleep fragmentation, sleep deprivation, or certain medical conditions such as epilepsy.

Treatment for adults with this sleep disorder is often dependent upon the amount of danger they are in during an episode. For example, a sleepwalker who opens doors and goes outside onto a busy city street is in danger. A sleepwalker that gets up and goes into the living room and sits down on a chair most likely is not in danger. Treatments can include behavioral therapies, self hypnosis, or prescription medication.

A sleepwalker, whether adult or child, needs to have a safe area so that they do not get hurt during an episode. Precautions can be taken to eliminate some dangers. Parents should make sure the child’s bedroom does not have any sharp or breakable objects. Doors should be locked at night to keep the sleepwalker from going outside. Sometimes it is necessary to put bells on doors to alert the sleeping parent that their child is sleepwalking. Large glass windows and doors should be covered with heavy drapery to lessen the chance of having the sleepwalker walk through it while it is closed.

A child with the sleep disorder of somnambulism needs to be protected and kept safe during an episode. It is the environment they are in that is the danger more then the sleep disorder itself.