Can low blood pressure cause lower limb edema?

Generally speaking, low blood pressure does not cause lower limb edema. The detailed explanation is as follows:

Low blood pressure usually refers to blood pressure values below the normal range—specifically, a systolic pressure below 90 mmHg or a diastolic pressure below 60 mmHg. Low blood pressure itself does not lead to lower limb edema. It indicates that the arterial pressure in the systemic circulation is below normal levels. Physiological hypotension is commonly seen in a small number of healthy individuals who meet the diagnostic criteria for low blood pressure but do not exhibit any clinical symptoms. There is no direct relationship between low blood pressure and lower limb edema. Lower limb edema is typically caused by fluid retention, lymphatic circulation disorders, increased venous pressure, kidney dysfunction, or similar factors.

In summary, low blood pressure does not cause lower limb edema. However, if both low blood pressure and lower limb edema are present, it should be taken seriously, and timely medical evaluation at a正规 hospital is recommended.