Blood Pressure and Kidney Disease
High blood pressure and kidney disease drive each other: high blood pressure damages the kidneys, and damaged kidneys make blood pressure harder to control. Breaking that cycle protects both.
Medically reviewed by the RIIMS medical team · Last updated: June 2026
Go to hospital now
- Blood pressure 180/120 mmHg or higher with chest pain, breathlessness, a severe headache or a change in vision: call your local emergency number (in most of India, 108 or 112) immediately
- Very little or no urine output
- Breathlessness at rest or when lying flat
See a doctor soon (not an emergency)
- Blood pressure that has stopped responding to your usual medicine
- New or worsening swelling in the feet or around the eyes
- Protein or foam newly noticed in the urine
How are blood pressure and kidney disease connected?
High blood pressure and kidney disease feed each other in both directions. Persistently high pressure damages the small blood vessels and filtering units inside the kidney, usually silently, over years; this is covered in detail on our page on hypertensive kidney disease. The relationship runs the other way too: when the kidneys are damaged, they lose some of their own ability to help regulate blood pressure, through fluid balance and a hormone system called the renin-angiotensin system, so blood pressure tends to climb further and becomes harder to control with the usual medicines. This is why a person with long-standing, poorly controlled blood pressure should have their kidneys checked, and why a person newly found to have kidney disease should have their blood pressure looked at carefully rather than treated as a separate problem. In India, high blood pressure is the second-biggest cause of kidney disease after diabetes. Because both conditions are largely silent until they are advanced, the same yearly tests, a blood pressure measurement and a kidney check with urine ACR and creatinine, tend to catch problems on either side while there is still the most to protect.
Symptoms to watch for
- Usually no symptoms on either side for years
- Blood pressure that is hard to control despite medication
- Protein or foam in the urine
- Gradually rising creatinine or falling eGFR on reports
- Swelling in the feet, ankles or around the eyes as either condition advances
- Headache, in some people, with very high readings
When to consult a doctor
If your blood pressure has been high for a while, ask for a kidney check (urine ACR, creatinine, eGFR) at least once a year, even without symptoms. If you already have kidney disease, ask what your blood pressure target should be, since it is often set lower than the general target.