Pediatric nephrology diseases are kidney and urinary-system conditions that affect babies, children and adolescents.

Some childhood kidney disorders are present from birth, while others develop later because of infections, immune-related diseases, inherited conditions, urinary obstruction, reflux, stones, dehydration or other medical problems. Acute kidney injury can develop suddenly, whereas chronic kidney disease may progress over months or years.

Children may not always describe kidney-related symptoms clearly. Some kidney disorders can also remain unnoticed during their early stages.

This makes appropriate evaluation important when a child develops persistent changes in urination, swelling, high blood pressure, blood or protein in urine, recurrent urinary infections, poor growth or unexplained changes in kidney-function tests.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialist evaluation and kidney care for patients with kidney-related conditions.

Which Diseases Are Managed in Pediatric Nephrology?

Pediatric nephrology covers a broad range of conditions affecting kidney function, urine formation, electrolyte balance and blood pressure.

Important categories include:

• Congenital kidney and urinary-tract abnormalities

• Chronic kidney disease

• Acute kidney injury

• Nephrotic syndrome

• Glomerulonephritis

• IgA-related kidney disease

• Hereditary kidney disorders

• Polycystic kidney disease

• Alport syndrome

• Kidney stones

• Urinary obstruction

• Vesicoureteral reflux

• Recurrent kidney infections

• Hemolytic uremic syndrome

• Electrolyte and acid-base disorders

• Hypertension associated with kidney disease

• Kidney failure requiring dialysis or transplantation

The exact causes vary considerably with the child's age and medical history. Congenital abnormalities are important causes in younger children, while inherited and systemic disorders also contribute to kidney disease in older children.

Kidney Disorders Present From Birth

Some children are born with abnormalities affecting the kidneys or urinary tract.

Examples include:

Renal Agenesis

A child may be born with one kidney or, rarely, without normally functioning kidneys.

Renal Dysplasia

The kidney may not develop normally during pregnancy.

Renal Hypoplasia

A kidney may be smaller than expected and contain fewer functioning filtering units.

Congenital Urinary Tract Abnormalities

Structural abnormalities can interfere with urine drainage and increase the risk of infections or kidney damage.

These conditions may be identified during pregnancy, infancy or later childhood depending on their severity.

Some congenital abnormalities require observation and monitoring, while others need medical, urological or surgical management.

Childhood Chronic Kidney Disease

Chronic kidney disease (CKD) means that kidney damage or reduced kidney function persists over time.

In children, CKD may result from congenital urinary abnormalities, hereditary disorders, glomerular diseases, systemic illnesses and other conditions.

Long-term kidney disease can affect more than kidney filtration.

Possible complications include:

• High blood pressure

• Anemia

• Electrolyte abnormalities

• Mineral and bone problems

• Growth impairment

• Nutritional problems

• Difficulty concentrating

• Cardiovascular complications

Because childhood CKD can influence growth and development, monitoring should consider the child's overall development rather than kidney function alone.

Acute Kidney Injury in Children

Acute kidney injury, or AKI, is a sudden decline in kidney function.

Potential causes in children include:

• Severe dehydration

• Infection

• Low blood pressure

• Blood loss

• Certain medicines

• Urinary obstruction

• Severe systemic illness

• Certain inflammatory kidney disorders

Some children recover kidney function after the underlying problem is treated, while severe AKI may require temporary dialysis.

Prompt evaluation is important because untreated severe AKI can become dangerous.

Nephrotic Syndrome in Children

Nephrotic syndrome is an important pediatric kidney condition involving substantial protein loss through the urine.

Typical features include:

• Proteinuria

• Low blood albumin

• Swelling

• Increased blood lipids

Swelling around the eyes can be particularly noticeable in children and may sometimes be mistaken for allergies. Swelling can also involve the legs, feet, abdomen, hands or other areas.

Common causes include minimal change disease and focal segmental glomerulosclerosis, although other primary, secondary and genetic causes are possible.

Treatment depends on the underlying diagnosis and may include medicines that control immune activity, reduce protein loss or manage complications.

Glomerular Diseases in Children

The glomeruli are microscopic filtering structures inside the kidneys.

Diseases affecting these filters can cause:

• Protein in urine

• Blood in urine

• Swelling

• High blood pressure

• Reduced kidney function

Examples include:

• Minimal change disease

• Focal segmental glomerulosclerosis

• IgA nephropathy

• Various forms of glomerulonephritis

• Membranoproliferative glomerulonephritis

• Other immune-mediated glomerular disorders

The treatment depends on the specific disease. In selected cases, additional blood tests or a kidney biopsy may be required to establish the diagnosis.

Hereditary and Genetic Kidney Diseases

Some pediatric kidney disorders are inherited.

Examples include:

Polycystic Kidney Disease

Genetic changes can cause cysts to develop in the kidneys and may progressively affect kidney function.

Alport Syndrome

This inherited disorder can affect the kidney's filtration barrier and may also be associated with hearing or eye abnormalities.

Genetic Glomerular Disorders

Certain gene variants can affect the structure or function of the kidney's filtering units.

A family history of kidney disease can therefore be an important part of a child's evaluation.

Genetic testing may be considered in selected children when the clinical picture suggests an inherited disorder.

Urinary Reflux and Obstruction

Some children have problems with the normal flow of urine.

Vesicoureteral Reflux

Vesicoureteral reflux, or VUR, allows urine to travel backward from the bladder toward the ureters and kidneys.

In some children, reflux can contribute to recurrent urinary infections and kidney damage.

Urinary Obstruction

A blockage anywhere along the urinary tract can interfere with normal urine drainage.

Depending on its location and severity, obstruction may cause:

• Kidney swelling

• Recurrent urinary infections

• Abnormal kidney function

• Pain

• Changes in urination

Some structural problems require assessment by a pediatric urologist in addition to nephrology care.

Kidney Infections and Recurrent UTIs

Urinary infections are common in childhood, but recurrent infections, particularly when associated with fever or urinary abnormalities, may require evaluation for an underlying urinary or kidney problem.

Repeated kidney infections can sometimes be associated with reflux, obstruction or structural abnormalities.

The treating doctor may recommend urine testing, cultures and imaging depending on the child's age, symptoms and history.

Kidney Stones in Children

Although kidney stones are less common in children than adults, pediatric nephrology may be involved when a child develops:

• Flank or abdominal pain

• Blood in urine

• Recurrent urinary symptoms

• A stone identified on imaging

• Repeated stone formation

• Abnormal mineral or metabolic findings

Evaluation may include urine and blood tests and imaging.

Children with recurrent stones may need assessment for metabolic or inherited risk factors.

Treatment is selected according to the stone's size, location, symptoms, obstruction and the child's overall health.

Hemolytic Uremic Syndrome

Hemolytic uremic syndrome (HUS) is a condition that can damage the kidneys and is often associated with destruction of red blood cells and low platelet levels.

Certain infections, including some caused by toxin-producing bacteria, can trigger HUS.

A child may develop symptoms such as:

• Reduced urine output

• Weakness

• Pallor

• Bruising or bleeding

• Abdominal symptoms

• Swelling

HUS can cause acute kidney injury and requires prompt medical evaluation.

Electrolyte and Acid-Base Disorders

The kidneys help maintain appropriate levels of electrolytes and regulate acid-base balance.

Kidney disorders in children can therefore be associated with abnormalities involving:

• Potassium

• Sodium

• Bicarbonate

• Calcium

• Phosphorus

Some children may also have inherited or tubular disorders that primarily affect electrolyte and acid-base handling.

Treatment depends on the underlying problem and may involve dietary measures, prescribed medicines or correction of specific deficiencies or excesses.

High Blood Pressure Related to Kidney Disease

Hypertension in a child should not automatically be assumed to be caused by kidney disease, but kidney disorders are an important possible cause.

Persistent high blood pressure may also contribute to kidney damage.

Children with sustained hypertension, particularly when accompanied by proteinuria, hematuria, abnormal kidney function or a known kidney disorder, may require specialist evaluation.

What Symptoms Can Suggest a Kidney Problem in a Child?

Symptoms vary depending on the disease and the child's age.

Possible warning signs include:

• Swelling around the eyes, feet or legs

• Foamy urine

• Pink, red or cola-colored urine

• Very frequent urination

• Reduced urine output

• Bedwetting after previously being dry

• Persistent high blood pressure

• Recurrent urinary infections

• Flank or abdominal pain

• Unexplained fatigue

• Poor appetite

• Nausea or vomiting

• Excessive thirst or urination

• Poor growth

• Shortness of breath in severe disease

Some children with early kidney disease may have few or no obvious symptoms.

When Should a Child Be Evaluated by a Pediatric Nephrologist?

Specialist kidney evaluation may be appropriate when a child has:

• Persistent protein in urine

• Blood in urine, particularly when associated with proteinuria

• Sustained high blood pressure

• Reduced eGFR

• Recurrent kidney infections

• Recurrent kidney stones

• Urinary obstruction

• Known congenital urinary abnormalities

• Unexplained swelling

• Persistent electrolyte abnormalities

• A family history of hereditary kidney disease

• Abnormal kidney imaging

• Unexplained decline in kidney function

Professional guidance identifies proteinuria, reduced eGFR, sustained hypertension, urinary stones, recurrent pyelonephritis and certain urinary abnormalities among reasons to consider nephrology referral.

How Are Pediatric Kidney Diseases Diagnosed?

Diagnosis starts with the child's history and physical examination.

The doctor may then use several investigations.

Urine Tests

Urinalysis can identify:

• Protein

• Blood

• Infection

• Other abnormalities

A urine albumin or protein measurement may provide additional information when kidney damage is suspected.

Blood Tests

Depending on the situation, testing may include:

• Creatinine

• Estimated kidney function

• Urea

• Electrolytes

• Bicarbonate

• Hemoglobin

• Albumin

• Calcium and phosphorus

Children require age-appropriate interpretation of kidney-function measurements.

Blood Pressure

Blood-pressure measurement is an important part of pediatric kidney assessment.

Ultrasound and Other Imaging

Imaging can help evaluate:

• Kidney size

• Kidney structure

• Urinary obstruction

• Congenital abnormalities

• Stones

• Other structural problems

Kidney Biopsy

A kidney biopsy may be recommended in selected children when the doctor needs tissue information to identify the underlying kidney disease or guide treatment.

Genetic Testing

Genetic testing can be useful when an inherited kidney disorder is suspected.

NIDDK notes that diagnosis of childhood kidney disease can involve urine and blood testing, imaging, biopsy and genetic testing depending on the clinical situation.

How Are Pediatric Nephrology Diseases Treated?

There is no single treatment for pediatric kidney disease.

The treatment plan depends on the child's diagnosis, age, kidney function, symptoms and overall health.

Management may include:

Medicines

Depending on the disease, children may receive medicines to:

• Control blood pressure

• Reduce protein loss

• Treat infection

• Control swelling

• Manage anemia

• Correct mineral abnormalities

• Treat immune-mediated kidney disease

• Correct acid-base disturbances

Nutrition Management

Children with kidney disease may need individualized advice about:

• Sodium

• Protein

• Potassium

• Phosphorus

• Fluids

• Calories and overall nutrition

Children are still growing, so restrictive diets should never be started without professional guidance. NIDDK recommends working with the child's healthcare team and, when appropriate, a dietitian to ensure adequate nutrition for growth.

Treating Structural Problems

Some urinary tract abnormalities or obstructions may require urological procedures or surgery.

Managing Long-Term Kidney Disease

For children with CKD, treatment focuses on preserving kidney function and managing complications affecting growth, blood pressure, blood counts, minerals and overall health.

What Happens If a Child Develops Kidney Failure?

Severe kidney disease can eventually progress to kidney failure in some children.

When the kidneys can no longer adequately perform their functions, kidney replacement therapy may become necessary.

Options can include:

• Hemodialysis

• Peritoneal dialysis

• Kidney transplantation

Some children may receive a kidney transplant before starting dialysis when medically appropriate.

The choice depends on the child's medical condition, size, overall health, family circumstances and transplant eligibility.

Can Pediatric Kidney Disease Be Cured?

The answer depends entirely on the underlying condition.

Some acute kidney problems can improve substantially after the cause is treated.

Some congenital or inherited kidney disorders cannot be eliminated, but careful monitoring and treatment can help preserve kidney function and manage complications.

Certain urinary obstructions may improve after the obstruction is corrected.

Therefore, it is more useful to ask what type of kidney disease does the child have and what can be done to protect kidney function? rather than assuming every pediatric kidney disorder has the same prognosis.

How Can Parents Support a Child With Kidney Disease?

Parents and caregivers can support treatment by:

• Giving prescribed medicines correctly

• Attending scheduled follow-ups

• Monitoring symptoms recommended by the healthcare team

• Following individualized dietary advice

• Keeping track of blood-pressure measurements when requested

• Reporting changes in urine or swelling

• Avoiding unapproved medicines and supplements

• Discussing over-the-counter medicines with the child's doctor

• Supporting normal school, social and physical activities when medically appropriate

Kidney disease can also affect children's emotional, educational and social development, so supportive family and healthcare environments are important.

When Does a Child Need Urgent Medical Attention?

Parents should seek urgent medical evaluation if a child with suspected or known kidney disease develops:

• Very little or no urine

• Severe breathing difficulty

• Rapidly increasing swelling

• Severe dehydration

• Persistent vomiting

• Confusion or unusual drowsiness

• Severe flank or abdominal pain with fever

• Blood in urine with significant illness

• Sudden deterioration in general condition

These symptoms may indicate acute kidney injury, severe infection, urinary obstruction or another serious complication.

Pediatric Kidney Care at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized assessment and management for kidney-related conditions.

Depending on the child's clinical situation, evaluation may include:

• Review of kidney and urinary symptoms

• Medical and family history

• Blood-pressure assessment

• Urine examination

• Kidney-function testing

• Proteinuria assessment

• Review of ultrasound or other imaging

• Evaluation of kidney stones or urinary obstruction

• Assessment of recurrent urinary infections

• Evaluation of electrolyte abnormalities

• CKD monitoring

• Dialysis-related kidney care when required

• Transplant-related evaluation for appropriately selected patients

Where a structural urinary condition requires surgical management, coordination with an appropriate pediatric urology team may be recommended.

Frequently Asked Questions

What are the most common pediatric nephrology diseases?

Important pediatric kidney conditions include congenital kidney abnormalities, chronic kidney disease, acute kidney injury, nephrotic syndrome, glomerular diseases, hereditary disorders, urinary reflux, obstruction, kidney stones, recurrent kidney infections and electrolyte disorders.

What are the warning signs of kidney disease in children?

Possible signs include swelling, foamy urine, blood in urine, changes in urine output, recurrent urinary infections, high blood pressure, fatigue, poor appetite, poor growth and unexplained abnormalities in kidney-function tests. Some children have few symptoms early in the disease.

When should a child see a nephrologist?

A child may need nephrology assessment for persistent proteinuria, certain patterns of hematuria, sustained hypertension, reduced kidney function, recurrent kidney infections, urinary stones, congenital urinary abnormalities or suspected hereditary kidney disease.

Can children develop chronic kidney disease?

Yes. Children can develop CKD from congenital abnormalities, hereditary conditions, glomerular diseases, systemic illnesses and other causes. CKD can affect growth and development as well as kidney function.

Can kidney disease in children be treated?

Many pediatric kidney diseases can be treated or managed. Treatment may involve medicines, nutrition management, treatment of infections or obstruction, monitoring and, in severe cases, dialysis or kidney transplantation.

Is kidney disease in children always permanent?

No. Some acute kidney problems can recover after treatment. Chronic, congenital and inherited disorders may require long-term monitoring and treatment, although the course varies significantly between conditions.

Can a child with kidney failure receive a transplant?

Yes. Kidney transplantation is an established treatment option for appropriately selected children with kidney failure. Some children may receive a transplant before dialysis, while others require dialysis while awaiting transplantation.

Conclusion

Pediatric nephrology diseases include a wide spectrum of conditions, ranging from congenital urinary abnormalities and childhood nephrotic syndrome to glomerular diseases, kidney stones, hereditary disorders, acute kidney injury and chronic kidney disease.

Because kidney disorders can affect a child's growth, blood pressure, nutrition, development and long-term health, early recognition and appropriate specialist evaluation are important.

Persistent protein in urine, blood in urine, swelling, abnormal blood pressure, recurrent urinary infections, kidney stones, urinary abnormalities or reduced kidney function should not be ignored.

Treatment is individualized according to the child's age, diagnosis and kidney function. Depending on the condition, management may involve medicines, dietary support, treatment of structural abnormalities, dialysis or kidney transplantation.

For specialist evaluation and individualized kidney 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 pediatric medical diagnosis, treatment or individualized medical advice. Kidney disorders in children have many possible causes, and symptoms can vary according to the child's age and condition. Do not start, stop or change medicines, supplements, antibiotics, dietary restrictions or fluid intake without guidance from the child's healthcare professional. Children with very little or no urine, severe swelling, breathing difficulty, persistent vomiting, severe dehydration, confusion, severe pain with fever or rapidly worsening symptoms require prompt medical assessment. For diagnosis and treatment, consult Dr. Sandip Prabhakar Bhurke or an appropriately qualified pediatric kidney specialist.