What to Know About a Kidney Doctor, Kidney Disease, And Treatment?

Written By Jaclyn P. Leyson-Azuela, RMT, MD, MPH
Published On
What to Know About a Kidney Doctor, Kidney Disease, And Treatment?

Kidney problems require the right medical care to protect your long-term health. Your kidneys filter waste and excess water from your blood 24/7. Various conditions can disrupt this vital process. You may face kidney stones, high blood pressure affecting your kidneys, or chronic kidney disease. A kidney doctor can help you understand your treatment options. So, knowing which specialist to go to will make a real difference. This guide covers kidney specialists, common kidney conditions, and how to get the care you need.

Key Insights

  • Nephrologists are kidney specialists who diagnose and treat all types of kidney disease

  • High blood pressure and kidney disease feed off each other

  • Polycystic kidney disease affects 1 in 400 to 1 in 1,000 people

  • Chronic kidney disease has five stages

  • At-home urine testing spots early warning signs

  • Nephrologists and urologists treat different problems

What are the causes, symptoms, and treatments for kidney stones?

Kidney stones form when minerals and salts turn into crystals in your kidneys. This happens when your urine gets too concentrated. The minerals stick together and form stones.

Common causes include not drinking enough water, eating too much sodium or protein, having a family history of stones, and certain medical conditions like gout. Some medications and supplements also raise your risk.

Symptoms include:

  • Severe pain in your side, back, or below your ribs

  • Pain that spreads to your lower belly and groin

  • Painful urination - urine may be pink, red, or brown

  • Cloudy or bad-smelling urine

  • Nausea and vomiting

  • Urinating small amounts frequently

Treatment depends on stone size and location. Small stones often pass on their own with more fluids and pain medicine. Larger stones may need:

Which doctor should you see for kidney stones?

Your primary care doctor can check kidney stone symptoms first. But severe cases need a urologist's help since they specialize in the urinary system.

Urologists handle the surgical side of kidney stone treatment. They do procedures like shock wave therapy, ureteroscopy, and stone removal surgery. These specialists have the right tools and training for stones that won't pass on their own.

Go to the emergency room if you have severe pain, fever, or can't urinate. These symptoms mean you need immediate care.

Can a nephrologist treat kidney stones?

Yes, nephrologists can help with kidney stone care. Urologists remove stones, but nephrologists focus on stopping future stones through medical care.

A nephrologist looks at your overall kidney health. They find underlying conditions that cause stones. They study your stone type and urine chemistry to create prevention plans.

Nephrologist treatments include:

  • Diet changes to reduce stone-forming substances

  • Medicine to change urine chemistry

  • Treating conditions like hyperparathyroidism that increase stone risk

  • Long-term kidney function monitoring

How are high blood pressure and kidney disease connected?

 

High blood pressure and kidney disease create a harmful cycle. Each condition makes the other worse. Your kidneys need healthy blood vessels to filter waste well. But high blood pressure damages these delicate structures.

High blood pressure damages the small blood vessels in your kidney called glomerulus. These structures filter your blood. When damaged, they work less well. As kidney function drops, your body holds onto more sodium and fluid. This raises blood pressure even more.

This cycle speeds up kidney damage over time. High blood pressure is the second leading cause of kidney failure in the United States. Diabetes is first. The condition often develops silently, earning the nickname "silent killer."

Risk factors that make both conditions worse include:

  • Diabetes

  • Family history of kidney disease

  • Age over 60

  • African American, Hispanic, or Native American ethnicity

  • Obesity

  • Smoking

Can a nephrologist help treat high blood pressure?

Yes, nephrologists are excellent at treating high blood pressure, especially when kidney disease is involved. These specialists understand how blood pressure control and kidney health work together better than most doctors.

A nephrologist takes a complete approach to blood pressure management. They consider how different medicines affect kidney function. They choose treatments that protect your kidneys while controlling blood pressure well.

Special treatments include:

  • ACE inhibitors and ARBs that protect kidney function

  • Diuretics matched to your kidney function level

  • Diet plans with less sodium based on kidney health

  • Fluid management strategies

  • Treatment of mineral imbalances affecting blood pressure

Regular check-ups are essential since kidney disease can change quickly. Nephrologists track both blood pressure trends and kidney function markers. They adjust treatments as needed.

What is polycystic kidney disease (PKD)?

Polycystic kidney disease causes many fluid-filled cysts to grow in your kidneys. These cysts slowly replace normal kidney tissue. This leads to kidney enlargement and reduced function over time.

PKD comes in two main forms. Autosomal dominant PKD usually appears in adulthood and progresses slowly. Autosomal recessive PKD is less common but more severe. It often appears in infancy or childhood.

Common symptoms include:

  • Pain in your back or sides

  • Headaches

  • High blood pressure

  • Urinary tract infections

  • Blood in urine

  • Kidney stones

  • Belly fullness from enlarged kidneys

The ADPK disease affects about 1 in 400 to 1 in 1,000 people worldwide. Genetic testing can confirm the diagnosis. But family history often provides the first clue since PKD runs in families.

Where can I get treatment for polycystic kidney disease?

 

Nephrologists provide the main treatment for polycystic kidney disease. These kidney specialists understand how PKD progresses. They can develop complete management plans.

Treatment focuses on slowing disease progression and managing complications. Early action helps preserve kidney function longer. It prevents serious complications.

Available treatments include:

  • Blood pressure medicines to protect remaining kidney function

  • Pain management strategies for cyst-related discomfort

  • Antibiotics for urinary tract infections

  • Diet changes to reduce kidney workload

  • Tolvaptan medicine to slow cyst growth in some patients

Many patients benefit from care at specialized PKD centers. These centers offer access to clinical trials, genetic counseling, and care teams that include nephrologists, nurses, dietitians, and social workers.

Can you live a normal life with polycystic kidney disease?

Many people with polycystic kidney disease, specifically ADPKD, live fairly normal lives with proper medical care. The key is early detection, consistent treatment, and lifestyle changes that support kidney health.

Disease progression varies widely among people. Some people maintain good kidney function well into their 70s. Others may need dialysis or transplantation earlier. Family history and genetic factors influence this progression.

Helpful lifestyle strategies include:

  • Keeping healthy blood pressure through diet and exercise

  • Staying well-hydrated to prevent kidney stones

  • Following a kidney-friendly diet low in sodium

  • Exercising regularly while avoiding contact sports

  • Managing stress through relaxation techniques

  • Getting regular medical check-ups

Pregnancy considerations become important for women with PKD. While many women have successful pregnancies, close monitoring by specialists helps manage any increased risks.

What is chronic kidney disease?

Chronic kidney disease happens when your kidneys slowly lose function over months or years. Unlike sudden kidney injury, this condition develops slowly. It often shows no symptoms until major damage has occurred.

The disease progresses through five stages based on kidney function levels. Stage 1 means mild kidney damage with normal function. Stage 5 means kidney failure requiring dialysis or transplantation.

Leading causes include:

  • Diabetes (causes about 40% of cases)

  • High blood pressure (causes about 30% of cases)

  • Polycystic kidney disease

  • Glomerulonephritis

  • Genetic disorders

  • Autoimmune diseases

  • Long-term use of certain medicines

As the disease progresses, symptoms become more severe. These include nausea, vomiting, loss of appetite, and trouble concentrating.

What doctors are experts in kidney health?

Nephrologists serve as the main kidney health experts. These doctors complete extra fellowship training after internal medicine residency. They focus only on kidney disease diagnosis and treatment.

Board-certified nephrologists understand how kidney function affects other body systems. They stay current with the latest research and treatment advances in kidney care.

Special areas of nephrology include:

  • Chronic kidney disease management

  • Dialysis care (hemodialysis and peritoneal dialysis)

  • Kidney transplantation

  • Glomerular diseases

  • Electrolyte and acid-base disorders

  • High blood pressure related to kidney disease

Some nephrologists specialize even more. They focus on areas like pediatric nephrology, transplant nephrology, or dialysis access procedures.

Can primary care physicians help with kidney problems?

Primary care doctors play a crucial role in kidney health, especially in early detection and prevention. These doctors often find kidney problems first during routine check-ups and screenings.

Your primary care doctor can:

  • Order basic kidney function tests like creatinine and urine analysis

  • Manage risk factors like diabetes and high blood pressure

  • Prescribe initial treatments for mild kidney problems

  • Coordinate care between specialists

  • Provide ongoing monitoring for stable kidney conditions

However, complex kidney problems require specialist care. Primary care doctors usually refer patients to nephrologists when kidney function declines significantly. They also refer to when specialized treatments become necessary.

The teamwork between primary care and nephrology ensures complete kidney care. Your primary care doctor continues to manage your overall health while the nephrologist focuses on kidney-specific issues.

What is nephrology, and what does a nephrologist do?

Nephrology is the medical specialty focused on kidney health and disease. The word comes from Greek terms "nephros" (kidney) and "logos" (study). It literally means the study of kidneys.

Nephrologists are internal medicine doctors who complete extra fellowship training in kidney care. This specialized education usually lasts two to three years. It covers all aspects of kidney function, disease, and treatment.

These specialists treat many conditions:

  • Chronic and acute kidney disease

  • Kidney stones and their prevention

  • High blood pressure related to kidney problems

  • Electrolyte imbalances

  • Kidney complications from diabetes

  • Genetic kidney disorders

  • Kidney infections

  • Preparation for kidney replacement therapy

Nephrologists work in various settings. These include hospitals, outpatient clinics, dialysis centers, and transplant programs. Many also participate in research to advance kidney care and treatment options.

What services are included in nephrology care?

Nephrology care covers complete kidney health services from initial diagnosis through advanced treatment options. These specialists provide both inpatient and outpatient care depending on your condition's severity.

Diagnostic services include:

  • Complete kidney function testing

  • Specialized imaging studies

  • Kidney biopsies when tissue analysis is needed

  • Genetic testing for inherited kidney diseases

  • Urine analysis and microscopy

Treatment services cover:

  • Medicine management for kidney disease

  • Dialysis preparation and ongoing care

  • Pre-transplant evaluation and post-transplant care

  • Diet counseling for kidney health

  • Management of complications like anemia and bone disease

Educational services help patients understand their condition and treatment options. Nephrologists spend significant time explaining complex kidney conditions. They help patients make informed decisions about their care.

How does a nephrologist treat kidney disease?

Nephrologists use a comprehensive approach to treat kidney disease. They focus on slowing progression, managing complications, and maintaining quality of life. Treatment plans are customized based on the specific type and stage of kidney disease.

Medicine management forms the core of treatment. Nephrologists carefully select medicines that protect kidney function while treating underlying conditions. They adjust doses based on kidney function levels and watch for side effects.

Common treatments include:

  • ACE inhibitors or ARBs to protect kidney function

  • Diuretics to manage fluid retention

  • Phosphate binders to prevent bone disease

  • Erythropoiesis-stimulating agents for anemia

  • Medicines to control mineral imbalances

Diet changes play a crucial role in kidney disease management. Nephrologists work with dietitians to develop eating plans. These reduce kidney workload while maintaining proper nutrition.

How does a nephrologist diagnose kidney disease?

Nephrologists use a complete approach to diagnose kidney disease. They combine medical history, physical exam, lab tests, and imaging studies when needed.

The diagnostic process begins with a detailed medical history. Nephrologists ask about symptoms, family history, medicines, and risk factors like diabetes or high blood pressure. This information helps identify potential causes and guide further testing.

Laboratory tests provide essential information about kidney function:

  • Serum creatinine levels to calculate estimated glomerular filtration rate (eGFR)

  • Blood urea nitrogen (BUN) to assess waste product buildup

  • Urinalysis to detect protein, blood, or other abnormalities

  • Urine protein measurements to assess kidney damage

  • Electrolyte levels to check for imbalances

Advanced testing may include:

  • 24-hour urine collections for detailed protein analysis

  • Specialized blood tests for autoimmune conditions

  • Genetic testing for inherited kidney diseases

  • Kidney imaging studies like ultrasound or CT scans

  • Kidney biopsy for definitive diagnosis in complex cases

What's the difference between a nephrologist and a urologist?

Nephrologists and urologists both treat kidney-related conditions. But their approaches and expertise differ significantly. Understanding these differences helps you choose the right specialist for your specific needs.

Nephrologists focus on medical management of kidney disease. They treat conditions affecting kidney function through medicines, diet changes, and lifestyle changes. These specialists excel at managing chronic conditions that require long-term medical care.

Urologists specialize in surgical treatment of the urinary tract system. They handle conditions affecting the kidneys, ureters, bladder, and urethra that require surgical intervention. Urologists perform operations and procedures to correct structural problems.

Key differences include:

  • Training

  • Treatment approaches

  • Conditions treated

  • Patient interaction

What can a nephrologist do that a urologist cannot?

Nephrologists have specialized expertise in kidney disease management that urologists typically don't have. Their internal medicine background provides a deep understanding of how kidney problems affect the entire body.

Specific capabilities unique to nephrologists include:

  • Managing complex medicine regimens for kidney disease

  • Treating electrolyte and acid-base imbalances

  • Providing dialysis care and supervision

  • Managing kidney disease complications like anemia and bone disease

  • Coordinating pre-transplant evaluation and post-transplant care

  • Understanding drug dosing adjustments for kidney function

Nephrologists also excel at managing the medical aspects of conditions that urologists might treat surgically. For example, while a urologist removes kidney stones, a nephrologist prevents future stones through medical management.

The ongoing relationship with patients sets nephrologists apart. They provide continuous care for chronic conditions. This builds long-term therapeutic relationships that help optimize kidney health over time.

When should you see a kidney specialist?

Several warning signs indicate you should see a kidney specialist. Your primary care doctor might suggest this consultation. Or you might recognize symptoms that warrant specialist evaluation.

Common reasons for nephrology referral include:

  • Protein in your urine that won't go away

  • Blood in your urine without clear cause

  • Rising creatinine levels showing declining kidney function

  • High blood pressure that's hard to control

  • Kidney stones that keep coming back

  • Family history of genetic kidney disease

  • Diabetes complications affecting your kidneys

Symptoms you shouldn't ignore include:

  • Swelling in your face, hands, feet, or belly

  • Ongoing fatigue and weakness

  • Changes in how often you urinate

  • Foamy urine (suggests protein loss)

  • Back pain that won't go away in the kidney area

  • Metallic taste in your mouth

Early consultation often leads to better outcomes. Nephrologists can slow disease progression and prevent complications when they get involved early.

What should you expect during your first visit with a kidney doctor?

Your first nephrology appointment usually lasts 60 to 90 minutes. This allows time for complete evaluation and discussion. Come prepared with questions and relevant medical records to make the most of this visit.

The appointment usually includes:

  • Detailed medical history review

  • Physical examination focusing on blood pressure, swelling, and kidney area

  • Discussion of current medicines and supplements

  • Review of recent laboratory tests and imaging studies

  • Development of initial treatment plan

  • Scheduling of follow-up tests if needed

Bring these items to your appointment:

  • List of all medicines and supplements with dosages

  • Recent laboratory results and imaging reports

  • Summary of medical history and previous treatments

  • Insurance cards and referral paperwork

  • List of questions and concerns

The nephrologist will explain your kidney condition in understandable terms. They'll discuss treatment options, potential side effects, and what to expect moving forward. This is your opportunity to ask questions and express concerns about your care.

Why would my doctor recommend a kidney function test?

Kidney function tests help detect early kidney damage before symptoms appear. Your doctor might order these tests based on risk factors, symptoms, or routine screening guidelines.

Common reasons for kidney function testing include:

  • Diabetes management and monitoring

  • High blood pressure evaluation

  • Family history of kidney disease

  • Taking medicines that can affect kidney function

  • Symptoms suggesting kidney problems

  • Routine health maintenance after age 60

Standard kidney function tests include:

  • Serum creatinine: Measures waste product levels in blood

  • Estimated GFR (eGFR): Calculates kidney filtering rate

  • Blood urea nitrogen (BUN): Assesses waste product buildup

  • Urinalysis: Checks for protein, blood, or infection

  • Urine albumin: Detects early kidney damage

What Can At-Home Urine Testing Help in Diagnosing Kidney Disease?

At-home urine testing provides convenient screening for early signs of kidney problems. These tests can detect abnormalities that warrant professional medical evaluation. However, they don't replace complete kidney function testing.

Home urine tests can identify:

  • Protein

  • Blood

  • Glucose

  • Specific gravity

  • pH levels

Benefits of home testing include:

  • Early detection of potential problems

  • Convenient monitoring for people at risk

  • Peace of mind through regular screening

  • Motivation to seek professional care when needed

  • Cost-effective preliminary screening

However, home tests have limitations. Abnormal results require professional confirmation and interpretation. Normal results don't guarantee absence of kidney disease, especially in early stages when urine may appear normal.

Use home testing as a supplement to, not replacement for, regular medical care. Share results with your healthcare provider to help guide further evaluation and treatment decisions.

Quick Summary Box

  • Nephrologists specialize in medical kidney care while urologists handle surgical urinary tract problems - choose based on whether you need ongoing medical management or surgical intervention

  • Early kidney disease often has no symptoms making regular screening essential, especially for people with diabetes, high blood pressure, or family history of kidney disease

  • High blood pressure and kidney disease worsen each other creating a dangerous cycle that requires specialized care to break and prevent permanent kidney damage

  • Home urine testing can detect early warning signs like protein or blood in urine, but abnormal results need professional medical confirmation and evaluation

  • Treatment timing matters significantly as early intervention by kidney specialists can slow disease progression and prevent complications better than delayed treatment

References
References

Aeddula, N., & Vaidya, S. (2024, July 31). Chronic kidney disease. National Library of Medicine; StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK535404/ 

Akbar, S., & Bokhari, S. R. A. (2020). Polycystic Kidney Disease. PubMed; StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK532934/ 

Alicic, R. Z., Rooney, M. T., & Tuttle, K. R. (2017). Diabetic Kidney Disease. Clinical Journal of the American Society of Nephrology, 12(12), 2032–2045. https://doi.org/10.2215/cjn.11491116 

Cleveland Clinic. (2022, September 26). What Is A Nephrologist? When To See One & What To Expect. Cleveland Clinic. https://my.clevelandclinic.org/health/articles/24214-nephrologist 

John Hopkins Medicine. (2019a). Extracorporeal Shock Wave Lithotripsy (ESWL). Johns Hopkins Medicine Health Library. https://www.hopkinsmedicine.org/health/conditions-and-diseases/kidney-stones/extracorporeal-shock-wave-lithotripsy-eswl 

John Hopkins Medicine. (2019b). Ureteroscopy. John Hopkins Medicine. https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/ureteroscopy 

National Institute of Diabetes and Digestive and Kidney DIseases. (2019, May 19). Autosomal Dominant Polycystic Kidney Disease | NIDDK. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/kidney-disease/polycystic-kidney-disease/autosomal-dominant-pkd 

National Institute of Diabetes and Digestive and Kidney Diseases. (2019a). Treatment for Kidney Stones | NIDDK. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/urologic-diseases/kidney-stones/treatment 

National Institute of Diabetes and Digestive and Kidney Diseases. (2019b). What Is Polycystic Kidney Disease? | NIDDK. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/kidney-disease/polycystic-kidney-disease/what-is-pkd 

National Institute of Diabetes and Digestive and Kidney Diseases. (2020a, January 13). Autosomal Recessive Polycystic Kidney Disease | NIDDK. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/kidney-disease/polycystic-kidney-disease/autosomal-recessive-pkd 

National Institute of Diabetes and Digestive and Kidney Diseases. (2020b, March). High blood pressure & kidney disease. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/kidney-disease/high-blood-pressure 

National Library of Medicine. (2019). Kidney stones: Overview. Nih.gov; Institute for Quality and Efficiency in Health Care (IQWiG). https://www.ncbi.nlm.nih.gov/books/NBK348937/ 

Nephrology | Research Starters | EBSCO Research. (2023). EBSCO. https://www.ebsco.com/research-starters/health-and-medicine/nephrology 

Raina, R., Houry, A., Rath, P., Mangat, G., Davinder Pandher, Islam, N., Ala'a Grace Khattab, Kalout, J. K., & Bagga, S. (2022). Clinical Utility and Tolerability of Tolvaptan in the Treatment of Autosomal Dominant Polycystic Kidney Disease (ADPKD). Drug, Healthcare and Patient Safety, Volume 14, 147–159. https://doi.org/10.2147/dhps.s338050 

The Glomerulus - Structure - Filtration - TeachMePhysiology. (2025). Teachmeanatomy.info. https://teachmeanatomy.info/physiology/renal-system/glomerulus/ 

Yirga, G. kassaw, Aytenew, T. M., Kassaw, A., Hiruy, E. G., Shiferaw, K., Baye, A. A., Kerebeh, G., Mekonnen, G. B., Ewunetu, M., Amare, A. T., Birlie, T. A., Wassie, F. D., Diress, T., Abeje, G., Eshetie, Y., Abere, Y., & Bantie, B. (2025). Chronic kidney disease among patients with hypertension in sub-Saharan Africa: a systematic review and meta-analysis. BMC Public Health, 25(1). https://doi.org/10.1186/s12889-025-22828-8 

Zhang, Y., He, D., Zhang, W., Xing, Y., Guo, Y., Wang, F., Jia, J., Yan, T., Liu, Y., & Lin, S. (2020). ACE Inhibitor Benefit to Kidney and Cardiovascular Outcomes for Patients with Non-Dialysis Chronic Kidney Disease Stages 3–5: A Network Meta-Analysis of Randomised Clinical Trials. Drugs, 80(8), 797–811. https://doi.org/10.1007/s40265-020-01290-3 

 

 

Jaclyn P. Leyson-Azuela, RMT, MD, MPH
Written by Jaclyn P. Leyson-Azuela, RMT, MD, MPH

Jaclyn P. Leyson-Azuela, RMT, MD, MPH, is a licensed General Practitioner and Public Health Expert. She currently serves as a physician in private practice, combining clinical care with her passion for preventive health and community wellness.

Frequently Asked Questions

Q: What's the difference between a kidney doctor and a regular doctor for kidney problems?
A: A kidney doctor (nephrologist) has specialized training in kidney diseases and can provide complete care for complex kidney conditions. Regular doctors can handle basic kidney issues but refer complex cases to specialists.
Q: When should I worry about kidney pain and see a specialist?
A: See a specialist for ongoing kidney area pain, especially with fever, blood in urine, or trouble urinating. These symptoms may indicate serious conditions needing immediate attention.
Q: Can kidney disease be reversed or only managed?
A: Some sudden kidney injuries can be reversed with quick treatment, but chronic kidney disease typically cannot be reversed. However, proper management can significantly slow progression and maintain quality of life.
Back to blog