What should you know about chronic kidney disease?

The condition can develop without noticeable symptoms, particularly in its earlier stages. A blood test and a urine test help a clinician assess kidney filtering and look for protein or other signs of kidney damage. Results over time are more informative than a single result.

Healthy kidneys remove waste from the blood, help control fluid and mineral levels, support blood pressure regulation, and contribute to red blood cell production. When kidney function is reduced, waste and fluid can build up, and changes in minerals or hormones may affect how you feel.

Diabetes and high blood pressure are important causes of kidney damage. Other contributors include some inherited kidney conditions, repeated kidney injury, urinary blockage, and certain medicines or supplements. Chronic kidney disease can also contribute to anaemia, gout, or restless legs symptoms; these problems should be assessed rather than assumed to come from the kidneys.

A clinician may track estimated kidney filtration, urine protein, blood pressure, blood glucose, electrolytes, and related blood results. The pattern helps guide follow-up and treatment.

Keep scheduled blood and urine checks, take prescribed medicines as directed, and tell your clinician about every over-the-counter painkiller, supplement, and herbal product you use. Some medicines can place extra strain on the kidneys or require a dose change when kidney function is reduced.

Work with your healthcare team on blood pressure and blood glucose control if either is raised. Choose a balanced eating pattern suited to your results; restrictions on salt, protein, potassium, or fluids are individual and should not be started without advice. Avoid smoking, stay physically active within your ability, and seek advice early when you are vomiting, have diarrhoea, or cannot keep fluids down.

Bring a current medicine list to appointments. Ask whether you need a kidney-protection plan before a scan involving contrast or before starting a new treatment.

Arrange a clinical review if you notice new swelling around the ankles or eyes, persistent tiredness, changes in urination, foamy urine, ongoing nausea, itching, muscle cramps, or unusual thirst. These symptoms have many possible causes, so testing is needed to identify the reason.

Seek urgent care for severe breathlessness, chest pain, confusion, collapse, a marked reduction in urine, or swelling that develops quickly. Get prompt advice during a significant illness with vomiting or diarrhoea, especially if you have known kidney disease or take medicines that affect blood pressure or fluid balance.

Do not stop prescribed medicines on your own when you feel unwell. Contact a clinician or pharmacist for a safe sick-day plan tailored to your medicines and kidney function.

Ask: What do my blood and urine results show? What may have caused the kidney changes? How often should I repeat testing? Do any of my medicines need a dose adjustment? Which symptoms should prompt an urgent call? Would a referral to a kidney specialist help?