Symptom >> Internal Medicine >> Neurology

Yawn

Introduction
Cause
Examine
Diagnosis

Introduction

Introduction People yawn from the time they are born until the end of their lives. Why do people yawn, the reason may not be clear. Possible mechanism The time for yawning was about 6 seconds. During this period, people closed their eyes and the nerves and muscles were completely relaxed. Therefore, it can be considered that yawning gives people the best rest in physical and psychological terms and has an important physiological protective effect on the human body. Some people think that yawning is a manifestation of cerebral hypoxia. The body's deep breathing exercise through yawning increases oxygen in the blood and discharges more carbon dioxide, thus making people more energetic. When people are sleepy, they often yawn constantly to remind the human body that the brain is tired and needs sleep and rest, so yawning is also a method of hypnosis. When people are about to enter a tight job, they often yawn again and again. This may be because the body uses deep inhalation to increase the oxygen in the blood and improve the brain's ability to move. In short, yawning is an instinctive reaction of the human body. It is like heartbeat and breathing, and is not controlled by human will. It has a good protective effect on protecting brain cells, increasing oxygen supply to brain cells and improving stress ability of the human body.

Cause

Cause

Some people think that the reason for yawning is hypoxia. (Physiological theory) When the lung surrounding tissue detects that the oxygen concentration in the lungs is low, people will yawn to inhale more air. But we now know that the lungs do not necessarily detect the lack of oxygen. A recent study pointed out that ultrasound scans can show images of the yawning of the fetus in the mother's stomach, but the lungs of the fetus in the uterus are still unable to breathe. At the same time, experiments have shown that people do not yawn in an environment with more carbon dioxide than in a normal environment.

Tired theory believes that if a person is tired of something, he will yawn and express his or her dissatisfaction in body language. But the activities of the nucleus of the hypothalamus, known as the brain's "yawning center," are often associated with the most interesting things. Therefore, the idea that yawning stems from people's exhaustion and boring may be wrong.

Evolutionary theory believes that yawning is passed down by the original ancestors to expose the teeth to warn others. Snakes that lie in the grass, often yawn and act again; the hippopotamus in the water will yawn first, then come out of the water. In view of the fact that human development has entered civilized society, it is outdated to issue warnings to others by yawning. If this is the case, then the behavior of human yawning is most likely an evolutionary relic that has lost its meaning.

When physiology theory, boredom theory, and evolution theory can't convince everyone, a theory is basically recognized by most people. The physiologists of the University of Maryland, Provin and Benninger, have been studying yawn for more than ten years. They found that drivers who drive at night often yawn frequently, and students who are reading and doing homework are yawning again, but few people yawn in bed. Therefore, yawning is a reaction to promote physical awakening when people feel that they must remain awake.

In this sense, yawn is a reflection of one's own "rejuvenation". The time of yawning is about 6 seconds. During this period, people close their eyes and the whole body nerves and muscles are completely relaxed. Yawning requires the movement of the muscles of the face to complete, so it can be suppressed by consciously clenching the teeth. The juror paid a high price for the yawn that should have been suppressed, and the reasonable use of the yawn can also bring us benefits.

We all know that yawning is contagious, a person yawns, and people around them are playing. Cognitive neuroscientists have found that the brain activity area when yawning is consistent with the brain activity area when expressing sympathy. In other words, the "contagion" phenomenon of yawning may represent an unconscious mental imitation. The study by Steven Pula Czech, a psychologist at Drexel University in the United States, concluded that yawns are the easiest to infect empathic people. These people are the kind of people who scream "" when others step on the tip. people.

If this person happens to be a person who is easily insomnia, then a Swiss scientist can help him solve this problem. The scientist associates sleep with the contagion of yawning, and he creates a "sleeping image." This is a half-length human head statue, this portrait is yawning sweetly, a sleepy look. He believes that people who are insomnia will only look at the avatar, and then they will yawn and then sleep peacefully.

In addition, people who work at long-term desks tend to maintain a posture for a long time, which not only affects blood circulation, but also reduces brain activity, resulting in poor work efficiency and aging of body cells. Therefore, when the appropriate time, the head yawns deeply to yawn, can promote blood reflux, help metabolism, enable cells to get more oxygen, effectively spit out the exhaust gas in the chest, increase the oxygen concentration in the blood, for the brain The center has the effect of removing sleepiness.

Due to the limited popularity of sleeping images, we can't judge the actual effect, but using yawn to remove sleepiness has proved to be quite effective. So, when the boss doesn't pay attention, let's yawn and relax.

Examine

an examination

Related inspection

Brain CT examination of mammography

Definition and characteristics of chronic fatigue syndrome (CFS): Chronic Fatigue Syndrom CFS is caused by people's extreme stress or excessive mental burden, which causes memory loss, inattention, insomnia, headache, Dizziness, easy error, and depression, etc., when the body is extremely weak, you can enter the reserve army of "overwork and death." However, some patients' symptoms will disappear automatically due to unknown reasons.

Sub-health and chronic fatigue syndrome

Sub-health status refers to people who are not yet ill, but have different levels of risk factors for various diseases and have a high risk of developing certain diseases. In the population over 40 years old, the proportion of sub-health has increased sharply. In this group of people, there is a tendency of "six highs and one low", that is, there is a high load (physical and psychological) close to the disease level, high blood pressure, High blood fat, high blood sugar, high blood viscosity, high body weight and low immune function.

Yawning is an instinctive reaction of the human body. It is like heartbeat and breathing, and is not controlled by human will. It has a good protective effect on protecting brain cells, increasing oxygen supply to brain cells and improving stress ability of the human body.

With the deepening of human understanding of the disease, the sub-health state (severe fatigue, muscle pain, insomnia, etc.) with persistent and symptomatic symptoms has been treated as a disease, and the US Centers for Disease Control and Prevention (CDC) officially named it Chronic Fatigue Syndrome (CFS).

CFS popular features

The incidence of CFS in the general population is about 0.2%. Some scholars have investigated that in the emerging industries of the city, "white-collar workers" (brain laborers), the incidence of chronic fatigue syndrome is 10% to 20%, and about 4 million people in the United States suffer from the disease.

CFS American Diagnostic Criteria

In April 1987, the US Centers for Disease Control and Prevention identified a group of syndromes characterized by chronic persistent or recurrent brain and physical fatigue as the main symptom of chronic fatigue syndrome (CFS) through expert identification. Diagnostic criteria. At the same time, there are 2 main criteria, 6 symptom criteria and 2 physical signs standards, or more than 8 simple symptom criteria can be diagnosed as CFS.

1, the main diagnostic criteria

(1) Lasting or recurrent fatigue lasts for more than 6 months.

(2) According to the history, physical signs or laboratory test results, various organic diseases that cause chronic fatigue can be excluded.

2, symptom standard

(1) Fatigue that is difficult to relieve due to excessive physical or mental stress.

(2) Muscle weakness without a clear cause.

(3) Insomnia symptoms are common, or have dreams and wake up early.

(4) Head swelling, dizziness or headache.

(5) Attention is not easy to concentrate, memory loss.

(6) Loss of appetite.

(7) Shoulder and back discomfort, chest tightness, or low back pain, untargeted myalgia and joint pain, no clear history of rheumatism or trauma.

(8) Depression, anxiety or nervousness, fear.

(9) Loss or loss of interest.

(10) Sexual dysfunction.

(11) Low heat.

(12) pharyngeal dryness, sore throat or throat has a tight feeling.

3, physical signs standard

(1) Low heat, the mouth table is less than 38 ° C, and the anal table is less than 38.6 ° C.

(2) pharyngeal congestion, but no clear tonsil inflammation.

(3) It can reach neck lymph nodes or tenderness of less than 2 cm.

(4) No other signs of disease causing fatigue were found.

Possible outcome of CFS - overworked

Serious people in CFS may die suddenly. The reason for being called "overwork death" is that they are overworked and can not be relieved in time. The mental and endocrine system is disordered, and there is a problem of overwork and premature aging. sudden death. From 1987 to 1989, Japan reported 1800 cases of "overwork death". In 1995, the general managers of 12 major companies such as Japan Seiko, ANA, and Kawasaki Steel were killed, mostly in the age of 40-50. The survey released by the National Reform Commission of China shows that the average life expectancy of intellectuals with heavy burdens is only 58 years old, which is about 10 years lower than the national average life expectancy. In the past 5 years, 134 professors and experts from the Chinese Academy of Sciences and Peking University passed away, the average age. Only 53.3 years old.

The "Overworked Death" Prevention Association of Japan suggests that the top ten danger signals are:

1. "General's belly" is early. People aged 30 to 50 are a sign of "mature" and a partner of high blood fat, fatty liver, high blood pressure and coronary heart disease.

2, hair loss, alopecia areata, early baldness.

3, frequently go to the bathroom.

4. Sexual ability declines.

5, memory loss.

6, mental arithmetic ability is getting worse.

7, often regret things, irritability, irritability, pessimism, it is difficult to control their emotions.

8. The ability to concentrate is getting worse.

9, sleep time is getting shorter and shorter, wake up is not relieved.

10, often headache, tinnitus, dizziness, no results in the examination.

Those with the above two or below are the "yellow light" warning period, so there is no need to worry about it. Those who have the above 3 to 5 items are a "red light" forecast period, indicating that they have already had the symptoms of "overwork death." For those 6 or more, it is a "red light" dangerous period, which can be designated as "fatigue syndrome"--the reserve army that has entered the "overwork death".

Diagnosis

Differential diagnosis