Renal hypertension symptoms: what to know

Renal hypertension describes high blood pressure caused by kidney disease or narrowing in the arteries supplying the kidneys. Headache, blurred vision, tiredness, breathlessness, or nosebleeds can occur with very high blood pressure, but they are not reliable ways to detect it. Kidney problems may also cause swelling around the ankles, changes in urination, blood in urine, or itching. Chronic Kidney Disease can contribute to renal hypertension, while long-standing hypertension can further strain kidney function.

Symptoms such as chest pressure, weakness on one side, or sudden trouble speaking may signal a separate emergency rather than explain the cause of high blood pressure.

Arrange a clinical assessment if readings remain high or you have kidney symptoms. Assessment may include repeat blood-pressure readings, blood tests for kidney function, a urine test, and imaging of the kidney or its blood vessels. Take prescribed medicine as directed and do not stop it because a reading improves. Limit added salt, avoid smoking, and tell the clinician about pain medicines, supplements, and decongestants, since some can raise blood pressure or affect the kidneys.

Seek emergency care for chest pain, severe breathlessness, fainting, confusion, a seizure, sudden weakness or numbness, or sudden difficulty speaking or seeing. These symptoms can occur with serious problems such as Stroke, Transient Ischaemic Attack, Angina, or Heart Failure and need prompt assessment. Contact a clinician soon for new swelling, markedly reduced urine, blood in urine, or repeated high readings with headache or visual change.

Ask whether your blood pressure pattern suggests a kidney-related cause, which kidney tests you need, and whether medicines or supplements could be contributing. You can also ask how to measure at home, what reading should prompt contact, and whether conditions such as Obesity or Obstructive Sleep Apnoea may be affecting control.