The secret behind sudden dizziness and lightheadedness is little known

When we suddenly stand up from a squatting position, we will feel black spots in front of our eyes and see stars. Some people think that they have anemia. In fact, this is a normal physiological reaction caused by low blood pressure due to a sudden change in a person's body position.

Diagnosis of blackouts

1. Orthostatic hypotension

When a normal person stands up, there will be a reflex contraction of the peripheral blood vessels to prevent blood from stagnating in the lower limbs.

Any disorder that causes autoregulation, such as loss of reflex vasoconstriction of peripheral blood vessels, will lead to a decrease in cardiac output and cause orthostatic hypotension.

In addition to the above reasons, vitamin deficiency, abnormal hormone secretion, menopause or autonomic nervous system disorders are also factors that cause dizziness.

2. Accompanied by discomfort symptoms

If blackening in front of the eyes is accompanied by paralysis or weakness of one side of the limbs, severe headache, vomiting, etc.

Then you should be highly vigilant and go to the hospital for treatment in time.

3. When it gets dark, everything in front of you becomes dark. This is night blindness.

This disease is mostly caused by a condition called congenital retinitis pigmentosa.

Secondly, vitamin A deficiency is caused by malnutrition or picky eating.

Differences between anemia and hypotension

anemia:

Anemia refers to a comprehensive pathological state in which the total number of red blood cells in the blood is reduced or the amount of hemoglobin in the red blood cells is reduced. Only in special circumstances, such as acute massive bleeding, will the patient not only suffer from anemia, but also have a sharp drop in blood pressure. There are many causes of anemia, such as iron deficiency anemia, hemolytic anemia, dyshematopoietic anemia, and infectious anemia.

Infectious diseases that can cause anemia include:

Acute infectious hepatitis, tuberculosis, suppurative lung diseases, gastrointestinal diseases. Especially after local resection of the gastrointestinal tract, it will affect the body's absorption of iron and vitamin B12, causing anemia. People with chronic nephritis, hydronephrosis and congenital polycystic kidney disease have a decrease in erythropoietin, which affects red blood cell production and can also cause anemia. Modern medical research has confirmed that many endocrine diseases and connective tissue diseases, such as chronic adrenal insufficiency, hypothyroidism, rheumatoid arthritis, lupus erythematosus, etc., are often accompanied by anemia.

Anemia is generally easy to detect, and complexion is often a mirror for determining whether anemia is present. People with anemia not only have pale complexions, but their eyelids and nails are also often pale and dull. Anemia can be mild or severe, and it also has a development process. Mild cases usually have no obvious symptoms, but some people may experience dizziness, tinnitus, insomnia, forgetfulness, and loss of appetite. More serious cases may cause edema, dry hair, and even anemia and heart disease. Of course, to determine whether you have anemia and the severity of anemia, it is best to go to the hospital to check the total red blood cell count and hemoglobin content.

Low Blood Pressure:

Hypotension refers to a condition in which an adult's blood pressure is below 90/60 mmHg for a long time. Common types of hypotension include constitutional hypotension and orthostatic hypotension. The former is mainly seen in women with weaker constitutions and mental workers. The symptoms are generally not obvious, but in severe cases, fatigue, dizziness, forgetfulness, and possibly tightness in the precordial area may occur.

Postural hypotension, also known as orthostatic hypotension, often occurs when you suddenly stand up from lying down or squatting, or when you stand for a long time. At this time, symptoms of transient cerebral ischemia such as dizziness will appear. To prevent and treat hypotension caused by physical weakness, you should avoid picky eating, and your diet should be a combination of meat and vegetables. You should consume foods rich in protein, iron, folic acid and vitamin B12. Increased physical exercise can regulate blood pressure. Patients with orthostatic hypotension should move slowly when standing up from a lying or squatting position. In addition, orthostatic hypotension can also be caused by a variety of diseases or drugs, such as spinal cord disease, endocrine dysfunction, chronic malnutrition, or improper and excessive use of antihypertensive drugs. Therefore, you should go to the hospital to find out the cause of the disease and then receive targeted treatment.

Ways to prevent orthostatic hypotension

The prevention and treatment of orthostatic hypotension is to prevent blood from stagnating in the lower body in daily life.

Make it a priority to develop habits that do not lead to lower blood pressure. The specific methods are:

1. When getting up from lying or sitting, take your time and get up slowly.

2. Lift your feet or step forward when standing up.

3. In order to allow the flow of hormones from the renin-aldosterone system that can increase blood pressure, raise your head when sleeping.

4. Improve blood circulation, improve the balance of the autonomic nervous system, and perform light and moderate exercises such as strengthening muscles.

5. Increase water and salt intake and eat a balanced diet.