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Why get up or get numbness?

 
Have you ever wondered why sleeping up numb hands like a needle or arm does not feel any? Let's explore what happened while we slept.
 
At first, the limbs lose their sensation as if they were pricked. According to Dyck, a neuroscientist at the Mayo Clinic, the phenomenon is quite common. And here is a good example of how the body protects itself even during sleep paralysis, also known as ballooning.
 
Dyck explains that the common misconception is that the sense of creeping, pangolin and numbness is due to anemia to the nerves. In fact, when the nerve is compressed, pressurized and squeezed, it causes these symptoms. We have some kind of nerve in the arm. Each type takes on important functions.
 
The axillary nerve lifts the arm at the shoulder.
 
Musculoskeletal nerves bend the elbows.
 
The nerve goes straight up the arm and lifts the wrist, finger.
 
The nerve pillar extends the fingers.
 
Although Dyck says that accurate physiological function is not fully understood, the impact of compression on any of the nerves in sleep is like overriding the watering tube. The information back to the brain temporarily interrupted.
 
So why are you feeling numb when you wake up? He gave two reasons:
 
1) It is actually temporarily paralyzed. During REM sleep, the brain sends a signal that causes a paralysis of the body. The purpose of this is to prevent dreams (occurring during REM sleep).
 
But if one wakes up in one of these stages, we can be alert before completely regaining control of limbs. This is called sleep paralysis (or shadows) and can be a scary situation. You are trapped somewhere between dream and alertness, and you can not move.
 
2) Nerve compression has resulted in temporary paralysis (perhaps because you were stuck in a compressed position during REM sleep).
 
Nerve compression can damage the nerves. The good thing is that the body naturally wakes up as a protective mechanism when the nerve is compressed for too long. After you wake up and reduce the pressure, the nerves will quickly recover, usually for the first time with a feeling of cough, numbness.
 
University of Rochester Medical Center explains: "The structure of the nerves that they recover has a tendency to stimulate over a period of time. That's because the nerves are automatically stimulating. Most of the time, the needle felt, pangolin is a good sign. It is a temporary phase which means the nerves are back to normal functioning. "
 
Some people who fall asleep on one hand do not affect the nerves much, but there are some cases when the compressed nerve can be a bigger problem.
 
One such case is called "Saturday Night Syndrome", the consequence of the rotator cuff, which causes the compression to occur when a person falls asleep at the same time as the nerve compression due to drunkenness.
 
If you get drunk, you will not move your arm. And when you wake up the next day, you can not stretch your wrists and fingers. That can last for a while (even a few days or months) when the nerves have to repair the protective layer.
 
Another problem is inherited neuralgia (HNPP), a genetic condition that makes people vulnerable to nerve pain, tingling, muscle weakness. People are more careful not to fall asleep on one arm or have their feet rested to avoid compression of the nerve.
 
In short, for most people who wake up with a paralyzed arm or leg, it's just a temporary discomfort. And we do not have to fear anything, it will take some time to recover as normal. In the cases of the above syndrome, when sleeping, should not put pressure on the arm or leg to avoid the unnecessary damage.


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