What is low blood pressure?
Low blood pressure means that the pressure in the circulating arteries of the body is much lower than the normal pressure, if the systolic blood pressure is lower than 90mmHg and diastolic blood pressure is lower than 60mmHg, it is considered to be low blood pressure. Hypotension also has certain symptoms, usually dizziness, weakness and a strong desire to sleep.
What causes low blood pressure?
There are a variety of causes of low blood pressure, and the factors affecting different types of low blood pressure are not quite the same.
1, caused by "postural hypotension" causes
Long time to maintain a sitting position or upright position when the blood pressure drop, there is such a factor caused by the so-called postural hypotension, usually the blood pressure fell more than 20mmHg. postural hypotension patients have obvious discomfort symptoms, nausea, dizziness, fatigue, and so on. The patients with postural hypotension have obvious symptoms of discomfort, such as nausea, dizziness, fatigue, blurred vision, and so on.
Postural hypotension is most common in pregnant women, middle-aged and elderly people, or patients who have been bedridden for a long time.
2, causes "somatic hypotension" causes
Sedentary or daily nutritional intake is not balanced will trigger low blood pressure, this is called somatic hypotension, especially in the young people often seen. Usually there are symptoms of depression, headache and dizziness, loss of appetite, chest tightness and shortness of breath.
3, cause "secondary low blood pressure" causes
Suffering from a disease, and long-term use of drugs triggered by the lowering of blood pressure, this is secondary low blood pressure. People suffering from high blood pressure, depression, or heart disease need to take a lot of medicines all year round, and low blood pressure is also considered a complication of these diseases.
4, the cause of "neurogenic hypotension"
The brain sends out the wrong instructions, which triggers neurogenic hypotension. For example, when the human body's blood pressure is normal, but the brain mistakenly believes that the blood pressure value is high, and thus sends instructions to lower the blood pressure value, which will lead to low blood pressure.
There are four types of long-term low blood pressure, the causes of low blood pressure is also given to explain, I hope to make you understand a few points more about low blood pressure.