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π©Ί Medically reviewed by the Health Decoded Guide Editorial Team · Last reviewed: July 2026
π Quick Summary
Chronic kidney disease (CKD) is a long-term condition where the kidneys gradually lose function.
It often develops silently—but early detection can slow progression.
1οΈβ£ Introduction
Chronic kidney disease is a condition affecting kidney function over time.
• kidneys filter waste and excess fluid from the blood
• CKD reduces this filtering ability
• often progresses slowly
π Many people have no symptoms in early stages.
2οΈβ£ How it happens
Kidney damage builds gradually.
• filtering units (nephrons) become damaged
• waste products accumulate in the blood
• fluid balance becomes affected
π The body slowly loses its ability to maintain balance.
3οΈβ£ Classification
CKD is divided into stages based on how well the kidneys are working.
• Early-stage CKD
- mild reduction in kidney function
- often causes no symptoms
- usually detected through blood or urine tests
• Advanced CKD
- significant loss of kidney function
- symptoms become more noticeable
- some people may eventually need dialysis or a kidney transplant
π The stage of CKD helps doctors decide the most appropriate treatment and follow-up.
4οΈβ£ Common causes
Medical conditions
• Diabetes
→ high blood sugar gradually damages the kidneys
• High blood pressure
→ puts extra strain on the small blood vessels in the kidneys
Other causes
• Long-term use of certain medicines
→ especially frequent use of NSAID painkillers (such as ibuprofen or diclofenac)
• Recurrent kidney infections
→ repeated infections can leave permanent kidney damage
• Inherited kidney diseases
→ such as polycystic kidney disease
• Urinary tract blockage
→ for example from kidney stones or an enlarged prostate
π Diabetes and high blood pressure are the two most common causes of chronic kidney disease worldwide.
5οΈβ£ Symptom explanation
As kidney function gradually gets worse, waste products and extra fluid begin to build up in the body.
This can cause:
• tiredness or fatigue
• swelling of the feet, ankles, legs or face
• changes in how much you urinate
• foamy urine if protein leaks into the urine
π These symptoms happen because the kidneys can no longer remove waste and extra fluid effectively.
6οΈβ£ Other symptoms
As CKD progresses, you may also develop:
• nausea or vomiting
• poor appetite
• itchy skin
• muscle cramps
• shortness of breath
π Many people have few or no symptoms in the early stages. Symptoms often appear as kidney function gets worse.
7οΈβ£ π©Ί When it becomes dangerous π¨
Seek urgent medical care if you develop:
• severe swelling
• severe shortness of breath
• confusion or unusual drowsiness
• very little or no urine
• chest pain
π These may be signs of advanced kidney failure or serious complications that need urgent medical attention.
8οΈβ£ Management and treatment
Treatment aims to slow kidney damage and prevent complications.
It may include:
• controlling blood pressure and diabetes
• healthy diet and reducing salt intake
• medicines to protect kidney function
• treating complications such as anaemia or fluid overload
• dialysis or kidney transplant for advanced kidney failure
π Early treatment can help slow the progression of chronic kidney disease.
9οΈβ£ Diagnosis
CKD is usually diagnosed using a combination of tests:
• blood tests (creatinine and eGFR)
• urine tests (protein or blood in the urine)
• blood pressure measurement
• kidney ultrasound or other imaging if needed
π Regular testing helps detect CKD early, even before symptoms develop.
π’ Important message
CKD often develops silently—but can be managed.
π Early detection and control of risk factors slow progression.
FAQ
• Can CKD be reversed?
Not usually—but progression can be slowed.
• Who is at risk?
People with diabetes, high blood pressure, or family history.
• Can CKD cause symptoms early on?
Often no. Many people have no symptoms until the disease becomes more advanced.
• Will everyone with CKD need dialysis?
No. Many people can manage CKD for years with treatment and regular follow-up.
• Can CKD be prevented?
Not always, but controlling diabetes, high blood pressure and maintaining a healthy lifestyle can reduce the risk.
π Related Health Topics
• High blood pressure
• Heart Disease
• High Blood Sugar
• High Cholesterol
• Healthy Diet Basics
π Medical References
• World Health Organization (WHO). Kidney health.
• National Health Service (NHS). Chronic kidney disease.
• Centers for Disease Control and Prevention (CDC). Chronic Kidney Disease Initiative.
• Mayo Clinic. Chronic kidney disease.
• National Institute for Health and Care Excellence (NICE). Chronic kidney disease: assessment and management (NG203).
• Kidney Disease: Improving Global Outcomes (KDIGO). KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease.
β οΈ Medical Disclaimer
This article is for educational purposes only and does not replace professional medical advice.
If you have symptoms or risk factors, consult a healthcare professional.