Kidneys play an important role in a child's growth and overall health. They remove waste products from the blood, maintain fluid and electrolyte balance, help regulate blood pressure and contribute to the production of hormones involved in red blood cell production and bone health.

Pediatric kidney disease refers to conditions that affect kidney structure or function during childhood or adolescence.

Kidney problems in children can develop for many different reasons. Some are present from birth, while others develop after infections, immune-related diseases, urinary tract abnormalities or other medical conditions.

Importantly, kidney disease in children does not always cause obvious symptoms in its early stages. Changes such as protein in urine, blood in urine, high blood pressure or poor growth may sometimes be the first indication of a kidney problem.

Early identification and appropriate treatment can help protect kidney function and support healthy development.

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

What Causes Kidney Disease in Children?

There is no single cause of pediatric kidney disease. Conditions can affect different parts of the urinary system and may vary considerably in severity.

Common causes include:

• Congenital abnormalities of the kidneys or urinary tract

• Vesicoureteral reflux

• Recurrent urinary tract infections

• Kidney inflammation such as glomerulonephritis

• Nephrotic syndrome

• Hereditary kidney disorders

• Polycystic kidney disease

• Kidney stones

• Urinary obstruction

• Certain genetic conditions

• Acute kidney injury

• Autoimmune disorders

• Certain infections or medications

Some children may have more than one factor contributing to kidney dysfunction.

Kidney Problems Present From Birth

Some kidney and urinary tract abnormalities develop before birth.

These may include:

• Abnormal kidney development

• Differences in kidney size or position

• Obstruction of urine flow

• Abnormalities of the ureters

• Vesicoureteral reflux

• Congenital cystic kidney disorders

These conditions may be detected during pregnancy ultrasound or after birth when a child develops urinary symptoms, infections or abnormal kidney-function tests.

Not every congenital abnormality causes progressive kidney disease. The appropriate approach depends on the specific abnormality and whether kidney function or urinary drainage is affected.

Signs of Kidney Disease in Children

Children may show different symptoms depending on the underlying condition.

Possible warning signs include:

Changes in Urination

Parents may notice:

• Very frequent urination

• Pain or burning during urination

• Bedwetting after previously being dry

• Very little urine

• Excessive urination

• Changes in urine color

• Blood in urine

• Foamy urine

Persistent or unexplained urinary changes deserve medical evaluation.

Swelling

Swelling around the eyes, face, hands, feet or ankles can occur when the kidneys retain excess fluid or when significant protein is lost through urine.

Morning puffiness around the eyes can sometimes be an important clue.

High Blood Pressure

High blood pressure can occur with several kidney conditions.

Because hypertension may not cause symptoms, blood-pressure measurement is an important part of evaluating children with suspected kidney disease.

Poor Growth

Some children with significant or long-standing kidney disease may experience:

• Poor weight gain

• Reduced height growth

• Poor appetite

• Delayed physical development

Growth should therefore be monitored as part of long-term pediatric kidney care.

Fatigue and Reduced Activity

Children with kidney disease may sometimes appear unusually tired, less active or have difficulty maintaining normal daily activities.

Fatigue can have many causes, so it should be interpreted alongside other findings.

Does Foamy Urine Mean a Child Has Kidney Disease?

Not necessarily.

Occasional bubbles in urine can occur for harmless reasons.

However, persistent or repeatedly noticeable foamy urine can sometimes be associated with proteinuria, meaning excess protein is present in the urine.

A urine test is needed to determine whether protein is actually present.

If proteinuria is confirmed, the cause should be investigated rather than assuming that the child has permanent kidney damage.

Blood in a Child's Urine

Blood in urine is called hematuria.

It may be visible to the naked eye or detected only through laboratory testing.

Possible causes include:

• Urinary tract infection

• Kidney stones

• Kidney inflammation

• Structural urinary abnormalities

• Trauma

• Certain inherited conditions

Some cases are temporary, while persistent hematuria may require further evaluation.

Pediatric Kidney Disease and Urinary Tract Infections

Urinary tract infections are relatively common in childhood, but recurrent infections may require investigation for underlying urinary tract abnormalities.

Repeated UTIs can sometimes be associated with conditions such as vesicoureteral reflux or urinary obstruction.

Medical evaluation may be particularly important when a child has:

• Recurrent UTIs

• Fever without an obvious source

• Kidney infection

• Abnormal ultrasound findings

• Poor growth

• High blood pressure

• Blood or protein in urine

The doctor may decide whether additional urine testing or imaging is appropriate.

Nephrotic Syndrome in Children

Nephrotic syndrome is a kidney condition characterized by significant protein loss through the urine.

It may cause:

• Swelling around the eyes

• Swelling of the legs or feet

• Weight gain from fluid retention

• Foamy urine

• Reduced blood albumin

Treatment depends on the underlying type and clinical situation.

Children with suspected nephrotic syndrome require medical assessment because complications such as infection, blood clots and fluid imbalance can occur in some cases.

Glomerulonephritis in Children

Glomerulonephritis refers to inflammation or injury involving the kidney's filtering structures.

Children may develop:

• Blood in urine

• Protein in urine

• Swelling

• High blood pressure

• Reduced urine output

• Changes in kidney function

Some forms occur after infections, while others are associated with immune or systemic diseases.

The treatment depends on the specific diagnosis and may range from monitoring to medicines directed at the underlying inflammatory or immune process.

Can Children Develop Kidney Stones?

Yes.

Although kidney stones are often associated with adults, children can also develop them.

Possible contributing factors include:

• Low fluid intake

• Dietary factors

• Family history

• Metabolic abnormalities

• Certain medical conditions

• Urinary tract abnormalities

A child with recurrent stones may need evaluation for why the stones are forming and how future episodes can be prevented.

How Is Pediatric Kidney Disease Diagnosed?

Diagnosis begins with a detailed medical history and physical examination.

Depending on the child's symptoms, the doctor may recommend several investigations.

Urine Examination

Urine testing can detect:

• Protein

• Albumin

• Blood

• Infection

• Crystals

• Other abnormalities

Blood Tests

Depending on the clinical situation, blood tests may include:

• Serum creatinine

• eGFR

• Urea

• Electrolytes

• Blood count

• Albumin

• Other disease-specific tests

Blood Pressure Measurement

Blood pressure is particularly important because kidney disease and hypertension can influence each other.

Ultrasound

Kidney and urinary tract ultrasound can provide information about:

• Kidney size

• Kidney structure

• Urinary obstruction

• Hydronephrosis

• Stones

• Some congenital abnormalities

Additional Testing

Depending on the suspected disease, a child may need:

• Specialized blood tests

• Genetic evaluation

• Additional imaging

• Urine protein quantification

• Immunological testing

• Kidney biopsy in selected cases

Not every child requires every test.

How Is Kidney Disease Treated in Children?

Treatment depends on the diagnosis rather than simply the presence of an abnormal kidney test.

Management may include:

• Treating urinary infections

• Managing blood pressure

• Reducing excessive protein loss in urine when appropriate

• Treating kidney inflammation

• Relieving urinary obstruction

• Managing kidney stones

• Correcting electrolyte abnormalities

• Adjusting medicines that may affect kidney function

• Providing nutritional support

• Monitoring growth and development

Some conditions require only observation and regular monitoring, while others need long-term medication or specialized treatment.

Protecting Kidney Function During Childhood

The goal of pediatric kidney care is not only to treat current symptoms but also to protect kidney function over the child's growing years.

Important measures may include:

Regular Monitoring

Children with known kidney disease may need periodic assessment of:

• Kidney function

• Urine protein

• Blood pressure

• Growth

• Electrolytes

• Disease-specific markers

Appropriate Nutrition

Nutrition should be tailored to the child's age, kidney function, growth requirements and underlying disease.

Children should not be placed on restrictive kidney diets without guidance from a qualified healthcare professional.

Medication Safety

Parents should inform doctors about all medicines, supplements and herbal products the child is taking.

Some medicines may require dose adjustment when kidney function is reduced.

Adequate but Individualized Fluid Intake

Children need sufficient fluids, but the appropriate amount depends on their age, health and kidney condition.

Children with certain kidney or heart conditions may require fluid restrictions, so forcing excessive water intake is not appropriate.

Can Pediatric Kidney Disease Be Cured?

The answer depends on the underlying condition.

Some childhood kidney problems are temporary or treatable.

For example, kidney function may recover after certain episodes of acute kidney injury when the underlying cause is corrected.

Other conditions, such as some inherited kidney disorders or established chronic kidney disease, may require long-term monitoring and treatment.

Even when a condition cannot be completely reversed, early and appropriate management may help preserve kidney function and reduce complications.

Can Kidney Disease Affect a Child's Growth?

Significant chronic kidney disease can affect nutrition, hormones, bone health and overall development.

Children with chronic kidney disease may therefore require monitoring of:

• Height

• Weight

• Nutritional status

• Bone and mineral health

• Pubertal development

The healthcare team can recommend appropriate interventions when growth is affected.

Pediatric Kidney Disease and School Life

A child with kidney disease may still be able to attend school and participate in normal activities depending on the severity and type of illness.

Some children may need:

• Regular medical appointments

• Medication during school hours

• Access to drinking water or toilets

• Temporary activity restrictions

• Additional support during treatment

Parents, teachers and healthcare professionals can work together to support the child's education while maintaining appropriate medical care.

When Should Parents Consult a Kidney Specialist?

A pediatric kidney evaluation may be appropriate when a child has:

• Persistent protein in urine

• Recurrent blood in urine

• Recurrent urinary infections

• Abnormal kidney-function tests

• High blood pressure

• Swelling

• Recurrent kidney stones

• Abnormal kidney ultrasound

• Poor growth associated with suspected kidney disease

• A known inherited kidney disorder

• Unexplained reduction in urine output

A specialist can determine whether the abnormal finding is temporary or requires ongoing kidney care.

When Is Pediatric Kidney Disease an Emergency?

Parents should seek urgent medical attention if a child develops:

• Very little or no urine

• Severe swelling

• Severe breathing difficulty

• Persistent vomiting with dehydration

• Severe flank or abdominal pain

• High fever with suspected urinary obstruction

• Confusion or unusual drowsiness

• Seizures

• Rapid deterioration in overall condition

These symptoms can indicate serious kidney, urinary or systemic complications.

Long-Term Kidney Care for Children

Children diagnosed with kidney disease may benefit from a coordinated long-term plan.

Depending on the condition, this can involve:

• Regular nephrology appointments

• Kidney-function monitoring

• Blood-pressure management

• Urine testing

• Nutrition support

• Growth monitoring

• Medication review

• Infection prevention and treatment

• Assessment for disease progression

The frequency of follow-up depends on the severity and type of kidney disease.

Pediatric Kidney Care at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialist assessment and individualized kidney care for patients with renal conditions.

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

• Assessment of abnormal kidney-function tests

• Review of urine abnormalities

• Evaluation of proteinuria and hematuria

• Blood-pressure assessment

• Review of kidney and urinary tract imaging

• Evaluation of recurrent urinary infections

• Assessment of kidney stones and urinary obstruction

• Management of chronic kidney conditions

• Coordination of advanced kidney care when required

Treatment decisions are based on the child's diagnosis, kidney function, age, symptoms and overall health.

Frequently Asked Questions

What are the early signs of kidney disease in children?

Early kidney disease may cause no obvious symptoms. Possible clues include swelling, changes in urine, persistent protein or blood in urine, high blood pressure, recurrent urinary infections or poor growth.

What causes kidney disease in children?

Causes include congenital urinary abnormalities, genetic disorders, kidney inflammation, nephrotic syndrome, recurrent infections, stones, obstruction and acute kidney injury.

Can kidney disease in children be treated?

Many pediatric kidney conditions can be treated or managed. The treatment depends on the underlying disease and how much kidney function is affected.

Is foamy urine always a sign of kidney disease?

No. Occasional bubbles are not necessarily abnormal. Persistent foamy urine may warrant urine testing for protein.

Can children get kidney stones?

Yes. Children can develop kidney stones and recurrent cases may require evaluation for metabolic, dietary, genetic or urinary causes.

Can kidney disease affect a child's growth?

Significant chronic kidney disease can affect growth and development. Children with chronic kidney problems should have their height, weight and nutritional status monitored.

Which doctor treats kidney disease in children?

A pediatric nephrologist specializes in kidney diseases in children. Depending on the condition, care may also involve pediatricians, urologists, dietitians or other specialists.

Conclusion

Pediatric kidney disease includes a wide range of conditions, from congenital urinary abnormalities and recurrent infections to kidney inflammation, stones, inherited disorders and chronic kidney disease.

Because children may have few or nonspecific symptoms in the early stages, findings such as persistent proteinuria, hematuria, high blood pressure, swelling, recurrent urinary infections or abnormal kidney tests should be evaluated appropriately.

Early diagnosis allows doctors to identify the underlying problem and determine whether the child needs observation, medication, nutritional support, a procedure or long-term specialist monitoring.

If your child has persistent urinary abnormalities, abnormal kidney-function results or a known kidney condition, consult a qualified kidney specialist for individualized evaluation and care.

For specialist kidney care, Prabhakar Bhurke Clinic provides nephrology services under Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician.

Medical Disclaimer

This article is intended for general educational and informational purposes only and does not constitute medical advice, diagnosis or treatment. Kidney disease in children can have many different causes, and symptoms may overlap with other medical conditions. Treatment, medicines, fluid intake, dietary changes and investigations should be individualized according to the child's age, diagnosis, kidney function and overall health. Do not give prescription medicines, painkillers, supplements or herbal remedies to a child without appropriate medical guidance. Seek urgent medical attention if a child has very little or no urine, severe breathing difficulty, severe swelling, persistent vomiting, seizures, confusion, high fever with suspected urinary obstruction or rapidly worsening symptoms. Consult a qualified pediatrician or nephrology specialist for personalized medical care.