After squatting for a long time, if you suddenly stand up, your head will be dizzy for a few seconds

Ordinary people in front of you will have it, but it's a bit serious when it's still dark in front of you.

The body suddenly went up, but the blood in the blood vessels did not all follow the brain upward due to inertia, but some of it was still in the middle and lower parts of the body, resulting in temporary partial ischemia of the brain --- dizziness.

If you squat on the ground for a little longer, and when you stand up suddenly, you often feel the world spinning and your eyes are full of stars. This is caused by temporary anemia of the head.

When a person is squatting, there are some special cases for the distribution of blood in the body. The first is that the two legs are pressed very tightly, the blood vessels are flattened, and the blood reaching the lower limbs is relatively small; Secondly, because the head is slightly tilted forward when squatting, the blood to the head is relatively more distributed.

When you stand up suddenly, the blood vessels in the lower limbs suddenly release the compression, so a significant part of the blood flows to the lower half of the body.

In addition, blood also has a certain weight in the body, and when you stand up suddenly, the blood flow will also flow to the lower half of the body due to the attraction of gravity and inertia, and the blood distributed to the upper body will be reduced. In addition, when standing up, the head is also upright, and it is more difficult to spurt blood from the heart to the high head.

All of this results in a relative decrease in blood flow to the head. The human brain is the most in need of blood oxygen, and a temporary reduction in blood supply can make people feel dizzy due to temporary cerebral anemia. In addition, due to the decrease in blood in the head, the blood supply to the eyeballs is naturally less, so the phenomenon of dazzling and Venus will occur.

At the same time, anemia and hypoglycemia can aggravate this phenomenon.

Dizziness when standing up is caused by insufficient blood supply to the brain due to the action of blood gravity when standing up, which many people have. It's not a big deal. The key is that you faint this time without any circumstances, and it shouldn't have much to do with the above.

There are several possibilities: 1. benign positional vertigo, 2. cerebral insufficiency, 3. vagus, vascular, etc.4

TIA These are all possible. What exactly needs to be ruled out in the hospital. Thank you.

This is normal, everyone has this phenomenon.

I don't understand the academic statement, it probably has something to do with blood oppression.

Don't worry.

In this case, it's good to get up slowly.

This is similar to squatting for a long time and your legs are numb.

Most of this situation is a normal phenomenon, and normal people may have this situation, because when people stand up suddenly, the heart has not had time to increase blood discharge, resulting in temporary ischemia of the brain, dizziness or gold stars in the eyes, etc., The main reason for this phenomenon is caused by temporary anemia of the brain.

When a person is squatting, the waist and legs are twisted and turned, and the blood cannot flow up and down. If you stand up abruptly at this time, the blood will flow down quickly, resulting in local ischemia in the upper body, but the brain and eyes have particularly strict requirements for oxygen and nutrients, and they must not be slackened. If you are already weak, the situation is more serious.

When standing up, don't move too hard, try as slowly as possible, so that the blood does not flow too violently, and the blood supply to the heart can keep up, and this phenomenon will not occur.

Many people have this experience: after squatting for a long time and then standing up suddenly, they will feel dizzy and dark. The main reason for this phenomenon is temporary anemia in the brain.

When a person is squatting, the waist and legs are twisted and turned, and the blood cannot flow up and down. If you stand up abruptly at this time, the blood will flow down quickly, resulting in local ischemia in the upper body, but the brain and eyes have particularly strict requirements for oxygen and nutrients, and they must not be slackened. If you are already weak, the situation is more serious.

However, don't panic when this happens, and you don't have to go to the hospital. If the blood supply to the head is insufficient, the heart will immediately work hard to pump blood up, and it will not take long for the body to return to normal. Of course, when standing up, don't move too hard, try as slowly as possible, so that the blood does not flow too violently, and the blood supply to the heart can keep up, and this phenomenon will not occur.

When a person is squatting, the lower limbs are flexed. At this time, the blood vessels of the lower limbs are compressed, and the blood is not easy to flow to the lower limbs, and the lower limbs will be in a slight ischemic state, and they will feel numb after a long time. When you suddenly stand up after squatting for a long time, the blood vessels in the lower limbs suddenly return to unblocked, as if the floodgates have been opened suddenly, and a large amount of blood will rush to the lower limbs.

The amount of blood produced by a person in a certain period of time is certain, and a large amount of blood rushes to the lower limbs, so that the blood in the head is not enough, and the brain does not get enough oxygen and nutrients for a while, so most people will have dizziness, heartbeat, and black vision. After the body adapts and adjusts, this phenomenon disappears quickly in most people. Therefore, most of this phenomenon is a normal physiological phenomenon, and it is not a disease such as anemia.