Can water and sodium retention cause high blood pressure?

Whether or not water-sodium retention can cause high blood pressure depends on the cause of the water-sodium retention and its degree. Usually, severe sodium retention can cause high blood pressure.
1. If the sodium retention is caused by excessive salt or water intake, it can usually cause transient sodium retention, and its symptoms are usually very mild, which may be manifested as mild edema of the eyelids in the morning, and it will not cause the symptoms of high blood pressure.
2. If sodium retention is caused by impaired cardiac function, heart failure and other factors, the heart pumping ability is poor, reflux is restricted, body fluids are stagnated in the venous system, which is manifested as localized stagnation, such as edema of the lower limbs, pulmonary stagnation, etc., which usually does not cause high blood pressure.
3. If sodium retention is due to renal insufficiency, such as nephritis, nephrotic syndrome, etc., it usually causes impaired excretion of body fluids and elevated systemic blood volume, which may lead to secondary hypertension.
In conclusion, the presence of water-sodium retention should be promptly consulted for a clear diagnosis and treated under the guidance of a doctor.