Why does a person twitch in his sleep, when he sleeps and when he falls asleep: a simple answer to a complex question

Prevention of stress, diagnosis of stress, Sleep Irina Vasilyeva Surely everyone has experienced a similar feeling. You fall asleep and fall asleep and suddenly it begins to seem like you are falling. An unexpected fall does not last long. It ends with a sharp start and waking up. Or here's another example. You look at a sleeping person and see how his limbs tremble during sleep. And when he wakes up, this person cannot even remember what he dreamed about. What causes a person to startle or jerk violently in their sleep? Isn't this harmful? Or maybe this signals some kind of physiological or mental disorder? There are a lot of explanations for this phenomenon on the Internet: from scientific to esoteric. But which of them is true and which is false? Let's figure it out together.

Good afternoon, dear reader! Today we will look at all the possible causes of this condition.

Some of them will be characteristic of healthy people, others – not so healthy.

I think you can easily determine what belongs to the first and what to the second group.

Classification of startles when falling asleep in adults

Most often, myoclonus occurs for the simplest reasons. For example, after severe physical fatigue. That is, it is not a symptom of a serious illness. Night cramps, or myoclonus, are divided into several types based on the source of localization in the nervous system:

  • Stem. They occur when nerve receptors are overexcited.
  • Cortical. They are provoked by an external stimulus - sudden noise, bright light.
  • Spinal. This type is most often a consequence of inflammatory diseases, heart attacks, tumors, and injuries.
  • Peripheral. Consequence of damage to elements of the peripheral nervous system.

Factors that cause myoclonus attacks

In the presence of certain diseases of the body, the causes of myoclonic spasms when falling asleep or during sleep can be:

  • Diffuse processes in the gray matter of the brain caused by a whole list of pathologies.
  • Neurological diseases of various etiologies.
  • Brain hypoxia, or oxygen starvation.
  • Uremia. If the normal functioning of the kidneys is disrupted, the body is poisoned by the products of protein metabolism.
  • Hyperosmolar coma.

Simpler causes of myoclonus in adults include:

  • Excessive physical activity, especially close to bedtime.
  • Stress, anxiety, prolonged nervous tension.
  • Drinking coffee or energy drinks.
  • Nutrient deficiency.
  • Tobacco smoking.


Also, attacks of myoclonus occur due to taking certain medications.

Differential diagnosis

The cause of involuntary shuddering when falling asleep can only be determined by differential diagnosis. Modern equipment makes it possible to identify diseases with similar symptoms at an early stage. Only after a full examination, in some cases:

  • CT or MRI;
  • electroencephalography;
  • radiography;
  • Ultrasound of the vessels of the cervical spine and head;
  • ECHO.

Treatment is prescribed individually.

Theories of involuntary movements

This question remains open. The most common reasons for such movements are given below.

Muscle relaxation

It is believed that during REM sleep, when a person can dream, his arm and leg muscles are paralyzed. But the brain continues to control the state of the body as a whole. For reasons that are still unclear, it happens that muscles relaxed during sleep are perceived by him as something wrong that requires intervention. The brain tries to change the state of the body, to wake it up. Limbs begin to twitch in sleep.

Stress

Also, the cause of involuntary twitching of the arms and legs, trembling of the body during sleep is considered to be a state of stress. Or just an uncomfortable body position on the bed. These conditions do not necessarily lead to the appearance of myoclonus. But the presence of these factors in people increases the likelihood of the syndrome occurring.

If a person tries to sleep after a noticeable nervous disorder, then sometimes the brain suddenly receives a danger signal, for example, the threat of a body falling. The signal is processed and the cause of the danger is sought. At this time, the person is in a state of half-asleep. And, as a rule, I dream about an unexpected fall. When a person wakes up, he usually remembers a dream in which he unexpectedly falls.

Restless legs syndrome

If involuntary and uncontrollable twitching of the limbs while falling asleep occurs regularly over a long period of time, you should consult a doctor. Since in this case, periodic limb movements syndrome may develop. It develops in different ways: in some people it manifests itself during the daytime, without bothering us at all at night.

The result of the development of SPD is a constant interruption of the deep sleep phase, but it does not lead to complete awakening. Therefore, a person does not realize that there is a problem, but the body cannot get proper rest during sleep. In turn, this leads to worsening nervous disorders.

Sleep apnea in adults

Periodic limb movements syndrome is very similar in its symptoms to another movement disorder, restless legs syndrome. These are different pathologies.

The main discomforts associated with restless legs syndrome:

  • burning,
  • tingling,
  • numbness in the legs, including the feet.

Symptoms are relieved for a short time or disappear completely with any movement. Walking, squats, and bending will help remove unpleasant manifestations. The problem is that everything happens when a person is about to fall asleep. Consequently, the quality of sleep decreases. The body again cannot fully rest.

In Parkinson's disease, Huntington's disease, and apnea, involuntary movements of the limbs when falling asleep or during sleep are an almost constant symptom.


In themselves, such shudders or involuntary movements of the limbs do not cause harm. This is only a consequence of processes occurring in the peripheral nervous system, or existing pathologies

Features of sleep for babies from 0 to 3 months

Some manifestations of restless behavior in children after falling asleep can be explained by the peculiarities of the structure of their sleep.

A baby's sleep, like an adult's, consists of two phases:

  1. Orthodox or slow-wave sleep. During this period, the brain is inactive, the body is relaxed, breathing is even and calm. It is during slow-wave sleep that a person fully rests and restores physical strength.
  2. Paradoxical or REM sleep. The paradoxical phase is characterized by an increase in body temperature and pressure, rapid heartbeat, breathing, and rapid movement of the eyeballs under closed eyelids.

During sleep, both phases replace each other: first comes slow sleep, then fast sleep, and so on in a circle. The structure of sleep in infants in the first months of life is unique: its main part is REM sleep, during which the baby may grimace, twitch his arms and legs. This behavior of a baby during sleep is absolutely normal and should not bother parents. As the child grows older, the period of the orthodox phase gradually increases, and the child begins to sleep more peacefully.

Other causes of twitching during sleep

The human brain never completely switches off during life. At night it works, but with less intensity. Monitoring of the condition of all organs and processes continues.

Sometimes the slightest muscle contraction is recognized by the brain as a danger signal, and the response signal is aimed at changing the situation. As a result, a person sleeps without waking up at all, but, for example, turns over and changes his position in his sleep. The most common reasons for shuddering in sleep are given below.

Slow breathing

The cause of involuntary movements of the upper body can be a violation of the breathing rhythm. Too few breaths and low levels of air flow create oxygen starvation in the brain. In response, he tries to wake up the body, make the lungs work more intensely.

Intense physical activity during the day

During intense physical activity, lactic acid accumulates in the muscles. It excessively increases muscle tone, resulting in chaotic contractions. Involuntary motor activity at night is manifested by those parts of the body that experienced the greatest load during the day. The person jerks his legs or his whole body.

Mental stress

Often the brain, having received a large amount of complex or negative information during the day, continues to process it at night. But at the same time he will work with greater intensity than usual. This will greatly interfere with falling asleep normally, the person will twitch. All kinds of deadlines and time pressures are fraught with insomnia.

Physiological feedback

The involuntary movements that occur for this reason are almost unnoticed by a person. They do not interrupt the deep sleep phase and do not lead to complete awakening at night. This is a normal process by which the brain controls the state of the entire body during the night's rest. The brain sends signals to the organs and receives a response, while the movements are weak and reflexive.

External stimuli

Normal sleep is possible in silence and darkness. Bright light and sharp sounds provoke the body's sensory systems to send signals of danger to the brain. Therefore, the brain tries to wake up the body.

Circulatory disorders

Night twitching may be caused by poor blood circulation. It occurs as a result of an uncomfortable posture. The second option is the presence of any pathologies. Then involuntary movements during sleep help to increase blood flow and the unpleasant sensations stop.

Why does a sleeping baby twitch?

If your child's twitches during sleep are repeated frequently and interfere with normal sleep, this is a reason to visit a pediatrician. Good sleep is even more important in infancy than in adulthood. To begin with, parents should observe the child to rule out any everyday causes for such manifestations.


In children, twitching of limbs during sleep occurs very often. There are also ordinary physiological reasons for this, natural for age. But there is also the possibility of developing the disease

In most cases there is no cause for alarm. This is a normal physiological process of a baby getting used to the world around him, to conditions that are radically different from those in which he developed for nine months.

Another reason is that the baby's nervous system is not yet fully developed. The braking mechanisms are not yet fully operational. The transition from the waking state to the sleep state has some difficulties. There are other reasons:

  • In premature babies, twitching during sleep occurs more often in the first months of life.
  • Very active children have difficulty falling asleep. It is more difficult for their nervous system to calm down.
  • If your baby's sleep-wake schedule is disrupted, he becomes overtired and takes much longer to fall asleep.
  • The result of dreams. Science recognizes that a child can dream even during the period of intrauterine development. The baby also dreams and may startle from this. Nothing wrong with that.
  • Hypnagogic myoclonus. It appears not only in children (usually between 4 and 7 years old), but also in adults. As a result of dreams, in which a sleeping person seems to be falling somewhere or suddenly failing, sharp spontaneous contractions of individual groups of muscle fibers occur. Sometimes this is accompanied by increased heart rate and breathing. After waking up, unpleasant symptoms and feelings of anxiety pass very quickly, without causing harm to the body.
  • Pain syndrome. At first, after starting complementary feeding, babies experience colic. This is a normal symptom of the digestive system getting used to a different type of food.
  • The newborn often jerks his arms and legs at a very high temperature.

The process of teething is constantly accompanied by pain. This also leads to involuntary twitching during sleep.

Dangerous causes of baby twitching

Myoclonic spasms in childhood may indicate significant disorders in the body:

  • Changes in metabolism. Low or high blood glucose levels. Glucose deficiency often provokes seizures.
  • Encephalopathy. Brain damage in newborns during labor. Pathology can also be congenital.
  • Meningitis. Inflammatory process of the membranes of the brain. Pathology is caused by infections.
  • Encephalitis. Infectious disease of the brain.
  • Epilepsy. Pathology of the brain, accompanied by frequent spontaneous seizures.


Twitching during sleep causes the baby to wake up

Treatment

It is worth noting that all medications must be taken after diagnosis and identification of the origin of involuntary muscle contractions.

Drug treatment is prescribed only by the attending physician, since there can be many causes of the syndrome.

Anticonvulsants from the Anticonvulsants group occupy the main place in the fight against spasms.

Among the medicines, antiepileptic drugs have proven themselves:

  • Barbiturate;
  • Clonazepam;
  • Volproate;
  • Benzodiazapine;
  • bioactive supplement L-tryptophan;
  • Tryptophan.

How to get rid of myoclonic spasms

In the absence of neurological diseases, the recommendations are simple. Significant physical activity should be completed 3-4 hours before bedtime. Stress should be avoided whenever possible. If you still feel nervous during the day, it is better to take a light sedative in advance.

It is better to take your last meal at least 2 hours before going to bed. The place to sleep should be comfortable. If necessary, it is worth replacing the pillow or mattress or even rearranging the bed for a comfortable night's sleep.

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