Hypotension is defined as a systolic blood pressure of less than 90 mmHg and a diastolic blood pressure of less than 60 mmHg. Hypotension can lead to inadequate perfusion, which can lead to damage to many organs and organ functions over time, and even lead to the occurrence of shock. Especially the more important systolic blood pressure, such as systolic blood pressure less than 90mmHg, need to go to the hospital to clarify the cause, what is caused by the situation, but some people usually blood pressure is eighty to ninety, no other arrhythmia, no tachycardia, or no urine, perfusion is not enough of these manifestations, long-term is such a blood pressure, also do not worry too much about this blood pressure is too low to appear problems, need to be based on their blood pressure usually If your blood pressure drops by 20 to 30 percent or your systolic blood pressure is lower than 90 mmHg, it is recommended that you go to the hospital to find out the cause of your lower blood pressure.