Kidney scarring, also called renal scarring, refers to areas of permanent or long-lasting structural damage within kidney tissue.

Scarring can develop after repeated inflammation, infection, obstruction, reduced blood supply or certain kidney diseases. In some people, the scar may remain localized and have little effect on overall kidney function. In others, extensive or bilateral scarring can contribute to reduced kidney filtration and chronic kidney disease.

People searching for kidney scarring treatment should know that treatment depends primarily on what caused the scarring and whether kidney function is being affected.

A scar that has already formed cannot usually be removed with a medicine. The focus is generally on identifying the underlying cause, treating active disease, preventing additional kidney injury and preserving the healthy kidney tissue that remains.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation for kidney scarring, abnormal kidney function and related renal conditions.

What Causes Kidney Scarring?

Renal scarring can have different causes. Understanding the underlying condition is an important part of treatment.

Repeated Kidney Infections

Recurrent or severe kidney infections can cause inflammation and tissue injury.

Repeated infections may be particularly concerning when associated with urinary tract abnormalities, reflux or obstruction.

Vesicoureteral Reflux

In vesicoureteral reflux (VUR), urine can flow backward from the bladder toward the ureters and kidneys.

Repeated urinary infections in people with significant reflux can contribute to renal scarring, particularly during childhood.

Urinary Obstruction

Long-standing obstruction can interfere with normal urine drainage and place stress on kidney tissue.

Possible causes include:

• Kidney stones

• Ureteral narrowing

• Enlarged prostate

• Structural abnormalities

• Masses or other blockages

Treating an obstruction can help prevent additional damage.

Glomerular Kidney Diseases

Some diseases affecting the kidney's filtering units can cause inflammation and eventually scarring.

Examples include certain forms of:

• Glomerulonephritis

• IgA nephropathy

• Autoimmune kidney disease

• Focal segmental glomerulosclerosis

The appropriate treatment depends on the specific diagnosis.

High Blood Pressure

Long-standing poorly controlled hypertension can damage small blood vessels and kidney tissue over time.

Blood-pressure management is therefore an important part of protecting remaining kidney function.

Diabetes

Persistent high blood glucose can damage the kidney's filtering structures.

Diabetic kidney disease can progressively reduce kidney function, although not every person with diabetes and reduced kidney function necessarily has diabetic kidney disease.

Previous Acute Kidney Injury

Severe episodes of acute kidney injury may leave residual structural damage in some patients.

Repeated episodes of kidney injury can increase the risk of chronic kidney-function decline.

Can Kidney Scarring Be Reversed?

In general, established scar tissue in the kidney cannot simply be removed or returned to completely normal tissue with medication.

However, treatment can still be valuable.

If the underlying cause is active or ongoing, treating it may:

• Prevent additional scarring

• Preserve remaining kidney function

• Reduce inflammation or infection

• Control protein loss

• Manage blood pressure

• Slow progression of chronic kidney disease

For example, treating recurrent infection or relieving urinary obstruction may prevent further kidney damage even though an existing scar remains.

What Are the Symptoms of Kidney Scarring?

Kidney scarring itself may not produce a specific symptom.

Some people discover renal scarring incidentally during an imaging test.

When the underlying condition affects kidney function, symptoms may include:

• High blood pressure

• Swelling around the eyes or legs

• Changes in urine

• Blood in urine

• Protein in urine

• Fatigue

• Reduced urine output in advanced disease

• Nausea in significant kidney dysfunction

Children with significant renal scarring may also have problems such as recurrent urinary infections, high blood pressure or impaired growth depending on the underlying condition.

Because symptoms are not always obvious, testing may be more useful than waiting for symptoms to appear.

Does Kidney Scarring Always Cause Kidney Failure?

No.

The effect of renal scarring depends on several factors.

These include:

• How much kidney tissue is affected

• Whether one or both kidneys are involved

• The location of the scars

• The underlying cause

• Presence of proteinuria

• Blood-pressure control

• Overall kidney function

• Whether additional injury is occurring

A person with a small area of scarring and otherwise preserved kidney function may not develop kidney failure.

Extensive bilateral damage, however, may contribute to chronic kidney disease.

Kidney Scarring in One Kidney

Scarring affecting only one kidney does not necessarily mean that overall kidney function will be severely reduced.

The other kidney may continue to provide substantial filtration.

Nevertheless, the cause of the scar should be investigated, particularly if there are:

• Recurrent infections

• High blood pressure

• Abnormal urine tests

• Kidney stones

• Urinary obstruction

• Reduced overall kidney function

Regular monitoring may be recommended depending on the individual's condition.

Kidney Scarring in Both Kidneys

Scarring affecting both kidneys deserves careful evaluation because the total amount of functioning kidney tissue may be reduced.

Depending on the severity, the patient may require monitoring of:

• Serum creatinine

• eGFR

• Urine albumin or protein

• Blood pressure

• Electrolytes

• Kidney size and structure

If kidney function is progressively declining, treatment should focus on the underlying disease and preservation of remaining function.

How Is Kidney Scarring Diagnosed?

There is no single test that identifies every type of renal scar.

A nephrologist may combine clinical history, laboratory testing and imaging.

Ultrasound

Kidney ultrasound can provide information about:

• Kidney size

• Structural abnormalities

• Hydronephrosis

• Stones

• Other changes

It may not detect every scar.

DMSA Scan

In selected cases, particularly when evaluating renal scarring related to recurrent urinary infections or reflux, a DMSA renal scan may be considered.

It can help assess differential kidney function and areas of cortical damage.

CT or MRI

More detailed imaging may be recommended when a structural problem needs further assessment.

The choice of imaging depends on the clinical question and the patient's circumstances.

Blood Tests

Blood tests may include:

• Serum creatinine

• eGFR

• Urea

• Electrolytes

• Other disease-specific investigations

Urine Testing

Urinalysis can identify:

• Protein

• Albumin

• Blood

• Infection

• Other abnormalities

A urine albumin-to-creatinine ratio may be useful in appropriate patients.

Is a Kidney Biopsy Needed for Scarring?

A kidney biopsy is not required for every patient with renal scarring.

Biopsy may be considered when doctors suspect an active kidney disease affecting the filtering units and when the result is likely to change treatment.

For example, significant proteinuria, unexplained kidney-function decline or suspected inflammatory kidney disease may lead to consideration of biopsy.

A biopsy decision should be individualized by the treating nephrologist.

Kidney Scarring Treatment Based on the Cause

There is no single medicine that treats all forms of kidney scarring.

Treatment may instead target the condition responsible for the injury.

If Recurrent Infection Is Responsible

Doctors may investigate why infections are recurring.

Treatment can involve appropriate antibiotics for confirmed bacterial infections and evaluation for reflux, obstruction, stones or other urinary abnormalities when indicated.

If Urinary Reflux Is Involved

Management of VUR depends on factors such as:

• Age

• Reflux severity

• Recurrent infections

• Kidney involvement

• Existing renal damage

Some patients may be monitored, while others may require medical, endoscopic or surgical management under appropriate specialists.

If Obstruction Is Causing Damage

The priority may be to restore normal urine drainage.

Depending on the cause, treatment may involve:

• Stone removal

• Ureteral stenting

• Nephrostomy

• Treatment of prostate obstruction

• Correction of structural abnormalities

The exact approach depends on the location and cause of the obstruction.

If Glomerular Disease Is Responsible

Treatment depends on the specific kidney disease.

Some conditions may require medicines that control the immune response, while others are managed primarily through blood-pressure control, reduction of proteinuria and kidney-protective treatment.

If Diabetes or Hypertension Is Contributing

Long-term control of blood glucose and blood pressure can help reduce ongoing kidney injury.

The appropriate medicines depend on kidney function, potassium levels, albuminuria and other clinical factors.

Can Medicines Heal Kidney Scars?

Medicines generally cannot erase established scar tissue.

Their purpose may be to control the disease that caused the damage or reduce the risk of additional injury.

Depending on the diagnosis, treatment may include medicines for:

• Blood pressure

• Proteinuria

• Diabetes

• Infection

• Inflammation

• Fluid retention

• Electrolyte abnormalities

The appropriate medication should be selected by a healthcare professional after assessing the underlying condition.

Kidney Scarring and Chronic Kidney Disease

Significant renal scarring can sometimes contribute to chronic kidney disease.

If kidney function is reduced, long-term management may involve:

• Regular eGFR monitoring

• Urine albumin assessment

• Blood-pressure control

• Diabetes management when applicable

• Medication review

• Individualized dietary advice

• Management of anemia or mineral abnormalities when present

• Avoidance of unnecessary kidney-harming medicines

The objective is to protect the remaining functioning kidney tissue.

Does Drinking More Water Remove Kidney Scars?

No.

Water cannot dissolve established kidney scar tissue.

Adequate hydration may be important for general kidney health and can be particularly relevant to some stone-related conditions, but fluid requirements differ between individuals.

People with advanced kidney disease, heart failure or certain other conditions may need fluid restrictions.

Do not attempt to treat kidney scarring by drinking excessive amounts of water.

Are There Natural Remedies for Kidney Scarring?

There is no established home remedy that can remove established renal scars.

Patients should be cautious about herbal products marketed as:

• Kidney cleansers

• Kidney detoxes

• Natural scar removers

• Renal repair supplements

Such products may contain substances that interact with medicines or potentially affect kidney function.

Evidence-based treatment should not be replaced with unverified supplements.

How Can Further Kidney Scarring Be Prevented?

Prevention depends on the original cause, but several measures can support kidney protection.

Treat Urinary Infections Appropriately

Repeated or severe urinary infections should be evaluated rather than repeatedly self-treated.

Manage Blood Pressure

Follow the blood-pressure target recommended by the treating doctor and take prescribed medicines consistently.

Control Diabetes

People with diabetes should monitor glucose and complete recommended kidney screening.

Address Urinary Obstruction

Kidney stones, urinary narrowing and other causes of persistent obstruction should receive appropriate evaluation.

Avoid Unnecessary Kidney-Harming Medicines

Some painkillers and other medicines can affect kidney function in susceptible people.

Always discuss regular use of over-the-counter medicines and supplements with a healthcare professional.

Attend Kidney Follow-Up

Regular monitoring can identify changes in kidney function before major complications develop.

When Should You See a Nephrologist?

Consider specialist evaluation when renal scarring is accompanied by:

• Reduced eGFR

• Increasing creatinine

• Protein or albumin in urine

• High blood pressure

• Recurrent kidney infections

• Recurrent urinary obstruction

• Blood in urine

• Progressive kidney-function decline

• Electrolyte abnormalities

A nephrologist can help determine whether the scarring is stable or whether an active kidney disease is continuing to damage the kidneys.

When Is Kidney Scarring an Urgent Concern?

Renal scarring itself may be a chronic finding rather than an emergency.

However, urgent medical assessment is appropriate when a person with kidney disease develops:

• High fever with flank pain

• Very little or no urine

• Severe breathlessness

• Rapidly increasing swelling

• Persistent vomiting

• Confusion

• Severe or rapidly worsening pain

• Sudden deterioration in health

Fever with urinary obstruction can indicate an infected obstructed urinary tract, which requires prompt treatment.

Kidney Scarring Treatment at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized assessment for patients with renal scarring and related kidney-function abnormalities.

Depending on the patient's condition, evaluation may include:

• Review of previous kidney infections

• Assessment of kidney-function trends

• Creatinine and eGFR testing

• Urine protein or albumin evaluation

• Blood-pressure assessment

• Review of ultrasound, CT, MRI or renal scan findings

• Evaluation for urinary obstruction

• Assessment of recurrent stones or infections

• Investigation of suspected glomerular disease

• Kidney biopsy consideration when clinically appropriate

• Long-term kidney-function monitoring

When a urological or surgical problem is identified, coordination with the appropriate specialist may be recommended.

Frequently Asked Questions

Can kidney scarring be cured?

Established kidney scars generally cannot be completely removed. Treatment focuses on addressing the underlying cause and preventing additional kidney damage.

What is the best treatment for kidney scarring?

There is no single treatment. Management depends on whether the cause is infection, reflux, obstruction, glomerular disease, diabetes, hypertension or another condition.

Can kidney scars go away?

Established scars generally remain. However, active inflammation, infection or another ongoing cause can often be treated to reduce the risk of further damage.

Does kidney scarring cause high creatinine?

Extensive renal scarring can reduce overall filtration and may contribute to elevated creatinine. Small or localized scars may have little effect on total kidney function.

Can kidney scarring lead to kidney failure?

Severe or extensive scarring, particularly when both kidneys are affected or ongoing injury continues, can contribute to chronic kidney disease and eventually kidney failure.

Can drinking water heal kidney scars?

No. Water does not remove established scar tissue. Fluid intake should be appropriate for the individual's kidney and overall health.

Is kidney scarring permanent?

Established structural scarring is generally considered permanent. The important treatment goal is to identify and control the cause and protect the remaining healthy kidney tissue.

Can a DMSA scan detect kidney scarring?

A DMSA renal scan can be useful in selected patients for assessing cortical defects and differential renal function, particularly in the evaluation of renal scarring associated with recurrent infections or reflux.

Conclusion

Kidney scarring treatment depends on understanding why the scar developed and whether there is ongoing kidney damage.

Established scar tissue generally cannot be removed with a medicine or home remedy. However, appropriate treatment can address active infection, reflux, urinary obstruction, glomerular disease, diabetes, hypertension or other causes and may help prevent additional kidney damage.

Kidney-function testing, urine evaluation and appropriate imaging can help determine how significantly the scarring is affecting the kidneys.

If renal scarring is associated with reduced eGFR, proteinuria, recurrent infections, high blood pressure or worsening kidney function, specialist nephrology evaluation is important.

For individualized kidney assessment and renal care, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and should not be considered a substitute for professional medical advice, diagnosis or treatment. Kidney scarring can have multiple causes, and the appropriate evaluation and treatment depend on the individual's age, medical history, kidney function, imaging findings, urine tests and underlying disease. Established kidney scar tissue generally cannot be reversed with medicines or home remedies, but treatment may help control the underlying cause and prevent further damage. Do not start antibiotics, painkillers, supplements, herbal products or other medicines without appropriate medical guidance. Seek urgent medical attention for high fever with flank pain, very little or no urine, severe breathlessness, confusion, persistent vomiting, rapidly increasing swelling or sudden deterioration in health. Consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist for individualized care.