Pain in both kidney areas usually refers to discomfort felt on both sides of the back or flank, beneath the lower ribs where the kidneys are located.

However, pain in this region does not necessarily mean that both kidneys are diseased.

The discomfort may originate from the urinary system, but muscles, the spine, nerves, gastrointestinal organs and other structures can produce pain in a similar area.

Kidney-related causes can include:

• Kidney stones

• Kidney infection

• Urinary obstruction

• Hydronephrosis

• Certain inflammatory kidney conditions

• Polycystic kidney disease

• Trauma or other kidney-related problems

A proper evaluation is important when pain persists, recurs or occurs with urinary or systemic symptoms.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation of kidney-related symptoms and kidney-function abnormalities.

Where Is Kidney Pain Usually Felt?

Kidney-related pain is generally felt toward the flank or side of the back beneath the ribs.

Depending on the cause, discomfort may spread toward:

• The abdomen

• Lower abdomen

• Groin

• Pelvic region

Kidney stone pain can be particularly intense and may move as a stone travels through the ureter. Kidney stones can cause sharp pain in the back, side, lower abdomen or groin.

Pain location alone, however, cannot establish that the kidneys are responsible.

Why Can Both Kidney Areas Hurt?

Pain on both sides can have several explanations.

Kidney Stones on Both Sides

Stones can develop in one or both kidneys.

A stone may cause little discomfort while it remains within the kidney, but pain can become severe when it moves into the ureter or obstructs urine flow.

Typical stone-related symptoms can include:

• Sudden flank pain

• Pain that comes in waves

• Blood in urine

• Nausea or vomiting

• Urinary urgency

• Pain while urinating

Having pain on both sides does not automatically mean that stones are present in both kidneys; imaging is needed to determine the cause.

Kidney Infection

A kidney infection, also called pyelonephritis, can produce pain in the back, side or groin.

It may occur with:

• Fever

• Chills

• Burning urination

• Frequent urination

• Cloudy or foul-smelling urine

• Nausea

• Vomiting

Kidney infections require timely medical assessment and may need antibiotic treatment.

If an infection occurs behind a urinary blockage, such as a stone, urgent treatment may be necessary.

Urinary Obstruction

A blockage can interfere with normal urine drainage.

Possible causes include:

• Kidney stones

• Ureteral narrowing

• Blood clots

• Tumors or masses

• Structural abnormalities

• Enlarged prostate in some patients

Obstruction can lead to hydronephrosis and, if prolonged or severe, may affect kidney function.

Hydronephrosis

Hydronephrosis means that urine has accumulated within the kidney because drainage is impaired.

It may occur on one or both sides depending on the location and cause of the obstruction.

Treatment focuses on identifying and relieving the underlying blockage when necessary.

Polycystic Kidney Disease

Some inherited kidney disorders can cause enlarged kidneys and discomfort.

In polycystic kidney disease, pain can occur because of kidney enlargement, cyst complications, infection or stones.

The evaluation and treatment are different from those used for ordinary kidney stones.

Could Pain in Both Kidney Areas Actually Be Back Pain?

Yes.

Musculoskeletal problems are a common cause of pain around the back and flank.

Muscle strain, spinal problems, poor posture, disc-related conditions and nerve irritation can all produce pain in areas that a person may perceive as “kidney pain.”

Some clues that favor a musculoskeletal source include pain that:

• Changes with movement

• Is associated with certain positions

• Occurs after physical exertion

• Is reproducible when specific muscles are pressed

These features do not completely exclude kidney disease, so persistent or unexplained pain may still require medical evaluation.

How Can Kidney Pain Differ From Muscle Pain?

There is no perfect home test to distinguish kidney pain from back pain.

However, some patterns may provide clues.

Kidney-related pain may be more likely when there is:

• Flank pain beneath the ribs

• Blood in urine

• Burning urination

• Fever or chills

• Nausea or vomiting

• Changes in urine output

• A history of kidney stones

• Known urinary obstruction

Musculoskeletal pain may be more suggestive when:

• It began after lifting or exercise

• It changes substantially with movement

• There are no urinary symptoms

• There is localized muscle tenderness

These are only general clues, not a substitute for examination.

What Symptoms Along With Bilateral Kidney-Area Pain Need Attention?

Pay particular attention if the pain occurs together with:

• Fever

• Chills

• Blood in urine

• Burning while urinating

• Cloudy or foul-smelling urine

• Nausea or vomiting

• Reduced urine output

• Difficulty passing urine

• Swelling

• Breathlessness

• Unexplained weakness

Kidney infection commonly produces fever, urinary symptoms and pain in the back, side or groin.

Can Kidney Stones Cause Pain on Both Sides?

They can.

A person may have stones in both kidneys, but the presence of bilateral pain does not prove that both kidneys contain symptomatic stones.

A kidney stone can cause severe pain when it moves into the ureter or blocks urine flow. Larger or obstructing stones may require active treatment.

Imaging is therefore important before deciding whether the pain is caused by stones.

Can a Kidney Infection Affect Both Kidneys?

Yes.

Kidney infection can involve one or both kidneys.

Because infection can become serious if untreated, symptoms such as fever, chills, flank pain, vomiting or painful urination should not be ignored.

A person who is very unwell, confused, severely weak or experiencing breathing difficulty needs urgent medical attention.

What Tests Are Used for Pain in Both Kidney Areas?

The appropriate evaluation depends on the symptoms and medical history.

Urine Examination

A urine test may help identify:

• Blood

• White blood cells

• Bacteria

• Protein

• Crystals

• Other abnormalities

Urinalysis can be useful when kidney stones or urinary infection are suspected.

Blood Tests

A doctor may check:

• Serum creatinine

• eGFR

• Urea

• Electrolytes

• Complete blood count

• Other tests depending on the suspected cause

These tests can help identify infection, kidney-function changes and metabolic abnormalities.

Ultrasound

Ultrasound may help identify:

• Kidney stones

• Hydronephrosis

• Kidney size

• Cysts

• Other structural abnormalities

CT Scan

A non-contrast CT scan may provide detailed information about urinary stones, including their location and whether they are causing obstruction.

The appropriate imaging method depends on factors such as age, pregnancy status, severity of symptoms and the suspected diagnosis.

How Is Pain in Both Kidney Areas Treated?

Treatment depends entirely on the cause.

If Kidney Stones Are Responsible

Management may include pain control, observation for suitable small stones or active stone removal when indicated.

Procedures can include:

• Ureteroscopy

• Laser lithotripsy

• Shock wave lithotripsy

• PCNL for selected larger or complex stones

Stone treatment is determined by size, location, obstruction, composition and the patient's overall condition.

If a Kidney Infection Is Responsible

Bacterial kidney infections generally require appropriate antibiotics.

Severe infections may require hospital treatment and intravenous medication or fluids.

If a stone or another obstruction is preventing urine drainage, the blockage may also need to be treated.

If Urinary Obstruction Is Responsible

The priority may be to restore urine drainage.

Depending on the cause, treatment may involve a ureteral stent, nephrostomy or a procedure to remove the obstruction.

If the Cause Is Musculoskeletal

Treatment may involve rest, physiotherapy, activity modification or other measures depending on the diagnosis.

Pain medicines should be selected carefully in people with kidney disease because some commonly used medicines can affect kidney function.

Is Drinking More Water Helpful for Bilateral Kidney Pain?

Not always.

Adequate hydration can be important for people with kidney stones and for preventing some recurrent stones, but forcing large quantities of water is not a treatment for every cause of kidney pain.

If urine flow is obstructed, excessive fluid intake does not remove the blockage.

People with advanced kidney disease, heart failure or prescribed fluid restrictions should follow their clinician's individualized fluid plan.

When Is Pain in Both Kidney Areas an Emergency?

Seek urgent medical attention if bilateral flank or kidney-area pain is accompanied by:

• High fever or chills

• Severe or rapidly worsening pain

• Persistent vomiting

• Very little or no urine

• Difficulty passing urine

• Confusion

• Severe weakness

• Breathlessness

• Fainting

• Rapid deterioration

A urinary obstruction accompanied by infection can become a serious medical problem. Kidney infection itself can also lead to severe complications if treatment is delayed.

Can Kidney Pain Occur Without Abnormal Kidney Function?

Yes.

For example, a kidney stone can cause significant pain even when overall kidney filtration remains preserved.

Conversely, chronic kidney disease can progress without causing significant pain.

Therefore, pain intensity does not reliably indicate the level of kidney function.

Kidney function should be assessed using appropriate blood and urine tests when clinically indicated.

What Can You Do Until You Are Evaluated?

If the cause of the pain is not known:

• Do not self-diagnose it as kidney pain.

• Avoid taking antibiotics without medical advice.

• Do not take large doses of painkillers without considering kidney health.

• Maintain your usual prescribed fluid plan.

• Seek medical attention if symptoms are severe or worsening.

• Keep previous kidney-function and imaging reports available for the doctor.

If you already have CKD, kidney stones or a history of urinary obstruction, inform the treating doctor about the new pain.

When Should You See a Nephrologist?

A nephrologist may be appropriate when pain occurs with:

• Abnormal creatinine

• Reduced eGFR

• Protein in urine

• Recurrent kidney problems

• High blood pressure

• Chronic kidney disease

• Recurrent urinary abnormalities

• Kidney-function deterioration

If imaging shows a stone requiring a procedure, a urologist may also be involved because many stone-removal procedures are performed by urological specialists.

Bilateral Kidney-Area Pain Evaluation at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized assessment for patients experiencing kidney-area pain and associated kidney concerns.

Depending on the clinical situation, evaluation may include:

• Detailed symptom assessment

• Review of previous kidney problems

• Kidney-function testing

• Urine examination

• Blood-pressure assessment

• Ultrasound or CT report review

• Assessment for urinary obstruction

• Evaluation of kidney stones

• Assessment for kidney infection

• Medication review

• Long-term kidney-function monitoring

When a surgical urinary condition is identified, appropriate coordination with a urological specialist may be recommended.

Frequently Asked Questions

What causes pain in both kidney areas?

Possible causes include kidney stones, kidney infection, urinary obstruction, hydronephrosis, certain cystic kidney conditions and non-kidney causes such as muscle or spinal problems.

Can kidney stones cause pain in both kidneys?

They can, particularly when stones are present on both sides, but bilateral pain does not automatically mean that both kidneys have stones. Imaging is needed for diagnosis.

Is pain in both kidney areas always a sign of kidney disease?

No. Back and flank pain can have many causes. Muscle, spine and nerve problems are common alternatives.

What are the warning signs with bilateral kidney pain?

Fever, chills, severe pain, vomiting, blood in urine, reduced urine output or difficulty passing urine are important warning signs. Fever with urinary obstruction is particularly concerning.

Which test is best for pain around the kidneys?

The appropriate test depends on the suspected cause. Urine and blood tests are commonly used, while ultrasound or CT may be recommended when stones, obstruction or structural kidney problems are suspected.

Can kidney pain be treated at home?

The cause should first be established. Mild musculoskeletal pain may improve with conservative care, but suspected kidney infection, obstruction or significant kidney stones require medical assessment.

Should I drink more water when both kidney areas hurt?

Not automatically. Fluid intake should be appropriate for your medical condition. Excessive water is not a treatment for urinary obstruction and may be unsafe in some patients.

Conclusion

Pain in both kidney areas can originate from the kidneys or urinary tract, but it can also result from muscles, the spine or other structures.

Kidney stones and kidney infections are important causes to consider, especially when pain occurs with urinary symptoms, blood in the urine, fever, nausea or vomiting. Urinary obstruction can also become serious when it interferes with urine drainage or occurs together with infection.

The right approach is to identify the cause rather than treating every episode of flank or back pain as kidney disease. Urine tests, kidney-function tests and appropriate imaging can help determine the diagnosis.

If you have persistent or recurrent pain in both kidney areas, particularly with abnormal kidney tests or urinary symptoms, specialist evaluation can help identify the underlying problem.

For individualized kidney evaluation and nephrology care, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and is not a substitute for medical diagnosis, treatment or individualized medical advice. Pain in both kidney areas can have kidney-related and non-kidney-related causes, and symptoms alone cannot establish a diagnosis. Do not start antibiotics, prescription medicines or high-dose painkillers without professional guidance. Do not force excessive amounts of water if you have suspected urinary obstruction, kidney disease, heart disease or a prescribed fluid restriction. Seek urgent medical attention for severe or worsening pain accompanied by fever or chills, persistent vomiting, very little or no urine, difficulty passing urine, confusion, severe weakness, breathlessness or rapid deterioration. Consult Dr. Sandip Prabhakar Bhurke or another qualified healthcare professional for appropriate evaluation.