The kidneys perform several essential functions, including filtering waste from the blood, removing excess fluid through urine, balancing electrolytes and supporting blood-pressure regulation.
One of the challenges with kidney disease is that symptoms may not appear during the early stages. A person can have abnormal kidney function or protein in the urine without feeling unwell.
As kidney problems progress, however, various changes may become noticeable. These can include changes in urination, swelling, tiredness, nausea, itching and changes in blood pressure.
Recognizing these warning signs and getting appropriate testing can help identify kidney disease earlier.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides evaluation and management for a wide range of kidney conditions.
Common Symptoms of Kidney Problems
Kidney symptoms vary depending on the underlying condition and how significantly kidney function has been affected.
Some common warning signs include:
1. Changes in Urination
Changes in normal urination may include:
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Urinating more frequently
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Urinating less than usual
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Increased nighttime urination
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Difficulty passing urine
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Changes in urine appearance
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Blood in the urine
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Foamy or unusually frothy urine
These changes do not necessarily mean kidney disease, but persistent or unexplained changes should be medically evaluated.
2. Foamy Urine
Occasional bubbles in urine can be normal.
However, persistent or unusually frothy urine can sometimes indicate increased protein or albumin leakage into the urine.
Proteinuria can occur with several kidney conditions and may require urine testing to determine its significance.
3. Blood in the Urine
Blood in urine, known medically as hematuria, can have several causes.
Possible causes include:
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Kidney stones
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Urinary tract infection
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Kidney disease
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Prostate or urinary tract conditions
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Certain medications
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Other urinary tract problems
Visible blood in urine should not be ignored, particularly when it is recurrent or unexplained.
4. Swelling of the Feet or Ankles
Kidney disease can sometimes cause the body to retain excess sodium and fluid.
This may result in swelling around the:
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Feet
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Ankles
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Lower legs
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Hands
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Eyelids
Swelling can also result from heart, liver, vein or medication-related problems, so its cause needs to be assessed rather than automatically attributed to the kidneys.
5. Puffiness Around the Eyes
Swelling around the eyes, particularly in the morning, can sometimes occur when significant protein is lost through the urine.
This may be associated with certain kidney diseases affecting the filtering units.
Persistent facial or eye swelling warrants medical evaluation.
6. Unusual Tiredness
As kidney disease becomes more advanced, patients may experience:
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Fatigue
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Weakness
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Reduced stamina
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Difficulty concentrating
Anemia associated with chronic kidney disease can contribute to tiredness.
However, fatigue is common in many medical conditions and does not by itself indicate kidney disease.
7. Nausea and Reduced Appetite
Advanced kidney dysfunction can cause accumulation of waste products in the blood.
Possible symptoms include:
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Nausea
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Vomiting
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Poor appetite
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Unpleasant taste in the mouth
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Weight loss
These symptoms can also have many other causes and should be evaluated if persistent.
8. Itching
Persistent generalized itching can occur in advanced kidney disease, particularly when kidney dysfunction is accompanied by abnormalities in mineral and bone metabolism.
Itching is not specific to kidney disease and may also occur because of skin, liver, medication or allergic conditions.
9. Muscle Cramps
Changes in electrolytes and fluid balance can contribute to muscle cramps or discomfort in some people with kidney disease.
Recurrent or severe cramps should be discussed with a healthcare professional, especially if kidney disease is already known.
10. Breathlessness
Kidney dysfunction can contribute to fluid accumulation.
Excess fluid may build up in the lungs and cause breathlessness.
Breathlessness can also have serious heart and lung causes. Sudden or severe difficulty breathing requires urgent medical attention.
Early Kidney Problems May Have No Symptoms
This is one of the most important facts about kidney disease.
Early chronic kidney disease often causes few or no noticeable symptoms.
Someone may feel completely healthy while having:
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Elevated urine albumin
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Reduced eGFR
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Persistent proteinuria
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Early kidney damage
This is why testing can be important for people who have an increased risk of kidney disease.
Who Is at Higher Risk of Kidney Problems?
Some people have a greater likelihood of developing kidney disease.
Risk factors include:
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Diabetes
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High blood pressure
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Family history of kidney disease
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Cardiovascular disease
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Obesity
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Previous acute kidney injury
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Recurrent kidney stones
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Certain autoimmune conditions
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Some inherited kidney disorders
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Long-term use of certain medicines
People with these risk factors should discuss appropriate kidney screening with their healthcare professional.
Kidney Problems and Changes in Urine
Urine can provide useful clues about kidney and urinary-tract health.
Possible changes include:
Foamy Urine
May be associated with protein or albumin in urine when persistent.
Dark or Tea-Colored Urine
Can have several causes, including dehydration, blood or certain foods and medications.
Red or Pink Urine
May indicate blood but can also have other explanations.
Reduced Urine Output
A significant decrease in urine can occur with dehydration, acute kidney injury, urinary obstruction or other serious conditions.
Frequent Urination
Frequent urination can occur with diabetes, urinary infections, prostate problems, increased fluid intake and several other conditions.
Urine changes should therefore be interpreted alongside symptoms and appropriate testing.
Does Kidney Disease Cause Pain?
Not always.
Many chronic kidney diseases do not cause kidney pain.
Pain around the side or back may occur with conditions such as:
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Kidney stones
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Kidney infection
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Urinary obstruction
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Certain cystic kidney conditions
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Trauma
Back pain is very common and can also originate from muscles, joints or the spine.
Therefore, the location of pain alone cannot confirm that the kidneys are responsible.
Symptoms of Kidney Infection
A kidney infection may cause symptoms such as:
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Fever
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Chills
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Pain in the side or back
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Burning during urination
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Frequent urination
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Nausea or vomiting
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Cloudy or foul-smelling urine
A suspected kidney infection requires timely medical evaluation because an untreated infection can become serious.
Symptoms That May Occur With Kidney Stones
Kidney stones can produce symptoms that are different from chronic kidney disease.
Possible symptoms include:
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Severe pain in the side or back
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Pain radiating toward the lower abdomen or groin
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Blood in urine
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Nausea
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Vomiting
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Burning during urination
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Frequent urge to urinate
Fever or chills along with suspected urinary obstruction can be an emergency and requires prompt medical assessment.
Symptoms of Advanced Kidney Failure
When kidney function becomes severely impaired, symptoms can become more noticeable.
These may include:
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Severe fatigue
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Loss of appetite
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Nausea
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Vomiting
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Persistent itching
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Significant swelling
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Breathlessness
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Changes in urine output
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Difficulty concentrating
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Sleep problems
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Muscle cramps
Not everyone develops the same symptoms.
Laboratory testing is essential for determining the severity of kidney dysfunction.
How Are Kidney Problems Diagnosed?
Symptoms alone cannot reliably diagnose kidney disease.
A healthcare professional may recommend:
Blood Tests
Common tests include:
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Serum creatinine
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eGFR
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Blood urea
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Electrolytes
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Bicarbonate
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Hemoglobin
Additional tests may be required depending on the suspected condition.
Urine Tests
These may include:
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Routine urine examination
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Urine protein
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Urine albumin
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Urine albumin-to-creatinine ratio
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Urine culture when infection is suspected
Blood Pressure Measurement
High blood pressure can both contribute to and result from kidney disease.
Kidney Imaging
Ultrasound or other imaging may be used when stones, cysts, obstruction or structural abnormalities are suspected.
What Does Creatinine Tell You About Kidney Health?
Creatinine is a waste product normally removed from the blood by the kidneys.
When kidney filtration decreases, creatinine may increase.
However, creatinine levels can also be affected by factors such as muscle mass, diet and certain medications.
For this reason, doctors generally assess creatinine together with eGFR, previous results, urine findings and the patient's overall medical history.
What Is eGFR?
Estimated glomerular filtration rate (eGFR) provides an estimate of kidney filtration.
A persistently reduced eGFR can be a sign of chronic kidney disease.
Kidney disease is not diagnosed based solely on one eGFR result. Doctors consider whether abnormalities persist and whether other evidence of kidney damage is present.
Can Kidney Problems Be Treated?
Treatment depends entirely on the underlying cause.
Management may include:
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Controlling blood pressure
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Managing diabetes
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Treating urinary infections
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Managing kidney stones
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Treating specific inflammatory or autoimmune kidney diseases
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Addressing urinary obstruction
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Managing proteinuria
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Treating complications of chronic kidney disease
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Dialysis for selected patients with severe kidney failure
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Kidney transplantation for suitable patients with advanced kidney failure
Early evaluation may help identify treatable causes and reduce the risk of further kidney damage in appropriate cases.
How Can You Protect Your Kidney Health?
Healthy habits can support kidney and cardiovascular health.
Control Blood Pressure
Regular monitoring and appropriate treatment can reduce the risk of kidney damage.
Manage Blood Sugar
People with diabetes should follow their prescribed diabetes-management plan and undergo recommended kidney screening.
Avoid Unnecessary Medicines
Some medications can affect kidney function, particularly when used incorrectly or in people with existing kidney disease.
Always discuss regular or long-term medicine use with a healthcare professional.
Reduce Excess Salt
Excessive sodium intake can contribute to high blood pressure and fluid retention.
Maintain a Healthy Weight
A healthy weight, balanced diet and regular physical activity can reduce several kidney-disease risk factors.
Get Appropriate Kidney Tests
People at increased risk should ask their healthcare professional about appropriate blood and urine testing.
When Should You See a Nephrologist?
A kidney specialist may be appropriate when you have:
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Persistent protein in urine
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Abnormal creatinine
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Reduced eGFR
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Recurrent blood in urine
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Unexplained swelling
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Difficult-to-control blood pressure
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Acute kidney injury
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Chronic kidney disease
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Recurrent kidney stones
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Diabetes with kidney abnormalities
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Unexplained decline in kidney function
A nephrologist can help determine whether the problem originates in the kidneys and develop an appropriate management plan.
When Are Kidney Symptoms an Emergency?
Seek urgent medical attention for symptoms such as:
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Very little or no urine
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Severe breathlessness
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Chest pain
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Confusion or unusual drowsiness
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Severe swelling with breathing difficulty
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High fever with severe flank or back pain
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Persistent vomiting with dehydration
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Severe pain associated with suspected urinary obstruction
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Rapid deterioration in overall health
These symptoms can have serious causes and should not be managed solely at home.
Kidney Care at Prabhakar Bhurke Clinic
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation and management for patients experiencing kidney-related symptoms or abnormal kidney tests.
Depending on the patient's condition, care may involve:
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Evaluation of kidney-function abnormalities
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Investigation of urine changes
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Chronic kidney disease management
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Acute kidney injury assessment
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Diabetes-related kidney care
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Hypertension-related kidney management
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Kidney stone-related evaluation
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Management of proteinuria
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Dialysis-related nephrology care
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Kidney transplant evaluation and follow-up
The appropriate treatment depends on the underlying diagnosis, kidney function, laboratory findings and overall health.
Frequently Asked Questions
What are the first symptoms of kidney problems?
Early kidney disease may have no noticeable symptoms. When symptoms occur, they can include changes in urination, foamy urine, swelling, fatigue and blood in urine.
Can kidney problems cause back pain?
Some kidney conditions, such as stones or infection, can cause flank or back pain. However, most back pain is not caused by kidney disease.
Is foamy urine always a sign of kidney disease?
No. Occasional bubbles can be normal. Persistent foamy urine may indicate protein in the urine and should be evaluated.
Can kidney disease be detected through a blood test?
Blood tests such as creatinine and eGFR provide important information about kidney filtration. Urine testing is also important because kidney damage can be present even when eGFR is relatively preserved.
Can kidney problems be cured?
Some kidney conditions are treatable or reversible, particularly certain causes of acute kidney injury. Chronic kidney disease is generally managed to preserve remaining kidney function and control complications.
Should I wait for symptoms before getting a kidney test?
Not necessarily. Because early kidney disease may be silent, people with risk factors such as diabetes or high blood pressure may benefit from routine kidney-health monitoring.
Conclusion
The symptoms of kidney problems can vary widely, and some of the most important kidney conditions may produce no symptoms in their early stages.
Changes in urination, persistent foamy urine, blood in urine, swelling, unexplained fatigue, nausea or reduced urine output can warrant medical evaluation. However, these symptoms can have many causes, so proper blood and urine testing is essential.
People with diabetes, high blood pressure, recurrent stones or other kidney-disease risk factors should discuss appropriate screening with a healthcare professional rather than waiting for symptoms to appear.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialized evaluation and management for kidney diseases and related complications.
Medical Disclaimer
This article is provided for general educational purposes only and does not constitute medical advice, diagnosis or treatment. Symptoms described above can occur because of many different medical conditions and cannot confirm kidney disease without appropriate clinical evaluation. Do not start, stop or change medicines, supplements, fluid intake or dietary restrictions based solely on this article. If you have severe breathlessness, chest pain, confusion, very little or no urine, high fever with severe flank pain, or rapidly worsening symptoms, seek urgent medical attention.
