Kidney stones do not always cause symptoms when they are still inside the kidney. A small stone may remain in place and pass through the urinary tract with little or no discomfort. Symptoms are more likely when a stone moves into the ureter, irritates the urinary tract or interferes with urine flow.

The early warning signs of kidney stones can therefore vary considerably from one person to another.

Possible early symptoms include:

• A new ache or sharp pain in the side or back

• Pain that moves toward the lower abdomen or groin

• Pink, red or brown urine

• A frequent urge to urinate

• Burning or discomfort while urinating

• Nausea

• Vomiting

• Cloudy or unusually strong-smelling urine

• Passing only a small amount of urine

Not every symptom means that a kidney stone is present. Urinary infection and other conditions can cause similar complaints, so persistent or significant symptoms should be medically assessed.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides kidney evaluation for patients with suspected stones, abnormal kidney-function tests and recurrent urinary problems.

1. A New Pain in the Side or Back

One of the earliest noticeable clues can be discomfort in the flank, the area between the lower ribs and hip.

Stone-related pain may:

• Start suddenly

• Remain on one side

• Become stronger over time

• Come and go in waves

• Move toward the abdomen or groin

A stone does not necessarily cause severe pain from the beginning. The intensity can change as the stone moves or the degree of obstruction changes.

However, ordinary back pain is much more commonly caused by muscles, joints or the spine. Back pain alone cannot establish that a kidney stone is present.

2. A Change in Urine Color

Another possible warning sign is blood in the urine.

Urine may appear:

• Pink

• Red

• Brown

Sometimes the amount of blood is too small to see and is discovered only through urinalysis.

Kidney and urinary stones are recognized causes of hematuria, but blood in urine can also result from urinary infection, kidney disease, medications and other conditions. It should therefore not automatically be attributed to a stone.

3. Suddenly Needing to Urinate More Often

A kidney stone moving lower through the urinary tract may produce urinary symptoms.

You may notice:

• A frequent urge to urinate

• Urgency

• Repeated trips to the bathroom

• Small amounts of urine

These symptoms are particularly important when they occur alongside pain or blood in the urine.

Frequent urination alone, however, has many possible causes and does not necessarily indicate a kidney stone.

4. Burning or Pain While Passing Urine

Some people with urinary stones experience discomfort during urination.

This can happen when the stone irritates the urinary tract, particularly as it approaches the lower urinary tract.

But burning urination is also a common feature of urinary infection.

If burning is accompanied by fever, chills, worsening flank pain or feeling significantly unwell, prompt medical assessment is important because infection may be present.

5. Nausea Along With Side Pain

Nausea can accompany kidney-stone pain.

Some people may initially notice:

side or back discomfort → increasing pain → nausea

Vomiting may occur when the pain becomes severe.

Persistent vomiting is important because dehydration can complicate the situation and may require medical treatment.

6. Cloudy or Bad-Smelling Urine

Cloudy or unusually foul-smelling urine can occur with urinary problems.

A kidney stone can coexist with a urinary infection, and infection may produce changes in urine appearance or smell.

Because cloudy or foul-smelling urine is not specific to stones, a urine test may be needed to determine whether bacteria or other abnormalities are present.

7. Passing Only a Small Amount of Urine

A stone that interferes with urine flow can cause difficulty passing urine or very small urine volumes.

This is more concerning when it occurs with:

• Significant pain

• Blood in urine

• Fever

• Chills

• Vomiting

• Known urinary obstruction

Inability to urinate or a major reduction in urine output requires prompt medical assessment.

Can Kidney Stones Be Present Without Any Warning Signs?

Yes.

Some kidney stones are silent stones and may cause no obvious symptoms while they remain inside the kidney.

A small stone may pass through the urinary tract without producing noticeable pain. Larger stones can become stuck and cause obstruction, pain or bleeding.

This is why an incidental stone found during an ultrasound or CT scan should not simply be ignored. Its size, location and effect on urine drainage need to be considered.

What Is the Difference Between an Early Stone and a More Advanced Symptom?

There is no fixed sequence that every kidney stone follows.

For example, one person may experience mild flank discomfort before developing severe renal colic, while another may have blood in the urine without noticeable pain.

A possible progression can look like:

No symptoms → mild side discomfort → urinary symptoms → stronger flank or abdominal pain → nausea or vomiting

But this is only one possible pattern.

Some stones remain asymptomatic, while others cause significant symptoms soon after entering the ureter.

How Can Early Kidney Stone Symptoms Be Different From a Back Problem?

This distinction is important because not every back or side pain comes from a kidney stone.

Features that may raise suspicion of a stone include:

• Sudden onset

• One-sided flank pain

• Pain that moves toward the abdomen or groin

• Blood in urine

• Nausea or vomiting

• Urinary urgency or burning

Musculoskeletal back pain may instead be associated with movement, posture or localized muscle tenderness.

These patterns are clues rather than a diagnosis. Medical examination and appropriate testing may be necessary.

Can a Kidney Stone Cause Urinary Infection?

Kidney stones and urinary infections can occur together.

A stone may obstruct urine drainage, creating a situation in which infection becomes particularly concerning.

Fever or chills together with suspected urinary obstruction should not be treated as an ordinary kidney-stone symptom.

A kidney infection can cause fever, chills, painful or frequent urination, flank pain, nausea and vomiting, and severe infection can progress to sepsis.

Urgent medical assessment is appropriate when these symptoms occur.

What Should You Do If You Notice Early Kidney Stone Signs?

Do not try to diagnose a stone solely from symptoms.

A healthcare professional may ask about:

• Location and timing of pain

• Previous kidney stones

• Family history

• Fluid intake

• Dietary habits

• Urinary symptoms

• Previous urinary infections

• Current medicines

• Existing kidney disease

Depending on the situation, urine tests, blood tests and imaging may be recommended.

How Are Kidney Stones Diagnosed?

Diagnosis generally combines the patient's history with laboratory and imaging findings.

Urine Examination

Urinalysis may identify:

• Blood

• White blood cells

• Bacteria

• Crystals

• Other abnormalities

Urine testing can also help determine whether an infection may be present.

Blood Tests

Depending on the clinical situation, testing may include:

• Creatinine

• Kidney function

• Electrolytes

• Calcium

• Uric acid

• Blood count

These tests can help assess kidney function and identify some factors associated with stone formation.

Ultrasound

Ultrasound can help identify many urinary stones and may show urinary obstruction or swelling of the kidney.

CT Scan

When more detailed information is needed, a non-contrast CT scan can help identify the stone's:

• Location

• Size

• Number

• Relationship to the urinary tract

• Possible obstruction

Imaging choice depends on the patient's symptoms, age, pregnancy status and clinical circumstances.

Does Every Kidney Stone Need Treatment?

No.

Treatment depends on factors such as:

• Stone size

• Stone location

• Symptoms

• Urinary obstruction

• Infection

• Kidney function

• Likelihood of spontaneous passage

Some small stones can pass naturally, while larger or obstructing stones may require active treatment.

Possible treatments include observation, medicines for selected patients, shock-wave treatment, ureteroscopy with laser fragmentation and other stone-removal procedures.

Can Early Kidney Stones Be Treated Without Surgery?

Some small stones may pass naturally without a procedure.

A doctor may recommend observation, pain management and appropriate fluid intake when spontaneous passage is reasonably likely.

However, more water does not guarantee that a stone will pass, and people with obstruction, vomiting, reduced kidney function or fluid restrictions should not independently increase their fluid intake.

Larger stones, persistent obstruction, significant symptoms or infection may require active treatment.

What Happens If a Kidney Stone Is Ignored?

Many kidney stones do not cause permanent kidney damage, particularly when they are appropriately evaluated and managed.

However, an untreated stone can potentially cause:

• Recurrent pain

• Urinary obstruction

• Blood in urine

• Urinary infection

• Kidney infection

• Reduced kidney function in complicated cases

A stone that becomes stuck can block urine flow, making timely medical evaluation important.

Early Warning Signs That Need Prompt Medical Attention

Some symptoms should not be managed as a routine stone episode at home.

Seek prompt medical care if you have:

• Severe or rapidly worsening flank pain

• Fever or chills

• Repeated vomiting

• Very little urine

• Inability to urinate

• Blood in urine with worsening symptoms

• Known stone with suspected infection

• Severe weakness or sudden deterioration

A suspected infected obstruction is particularly important because it may require urgent treatment rather than simply waiting for the stone to pass.

Can Kidney Stones Be Prevented After the First Episode?

A first stone can be an opportunity to identify factors that may increase the risk of recurrence.

Prevention may involve:

• Maintaining appropriate fluid intake

• Avoiding excessive dietary sodium

• Following an individualized eating pattern

• Maintaining appropriate dietary calcium rather than unnecessarily eliminating calcium

• Reviewing medications and supplements

• Stone analysis when a stone is recovered

• Metabolic evaluation in selected patients

The best prevention plan depends on the stone's composition and the patient's individual risk factors.

When Should You See a Kidney Specialist?

Consider specialist kidney evaluation if you have:

• Repeated kidney stones

• Abnormal creatinine or eGFR

• Reduced kidney function

• Significant protein in urine

• Recurrent urinary infections

• A history of urinary obstruction

• Bilateral or multiple stones

• A metabolic condition associated with stone formation

A nephrologist can assess kidney function and associated medical conditions. A urologist generally manages many procedures used to remove urinary stones. Depending on the patient's situation, both specialists may be involved.

Kidney Stone Evaluation at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized kidney evaluation for patients with suspected or recurrent kidney stones.

Depending on the clinical situation, assessment may include:

• Review of early urinary and pain symptoms

• Kidney-function evaluation

• Creatinine and eGFR testing

• Urine examination

• Assessment of blood in urine

• Review of ultrasound or CT findings

• Evaluation of recurrent stones

• Assessment of urinary obstruction

• Metabolic risk evaluation

• Review of associated kidney conditions

• Coordination with appropriate urological specialists when stone removal is required

The treatment plan depends on the stone characteristics, kidney function and overall clinical condition.

Frequently Asked Questions

What are the first warning signs of kidney stones?

Possible early signs include new flank or side pain, blood in urine, urinary urgency, burning during urination, nausea and changes in urine appearance. Some stones cause no symptoms at all.

Can kidney stones start with mild pain?

Yes. Symptoms vary. Pain may begin as discomfort and become stronger as the stone moves, although some stones remain painless until they cause obstruction.

Is frequent urination an early sign of kidney stones?

It can occur, particularly when a stone is lower in the urinary tract, but frequent urination also has many other causes.

Can you have a kidney stone without pain?

Yes. Some stones remain inside the kidney without causing noticeable symptoms.

Does blood in urine always mean kidney stones?

No. Stones are one possible cause of hematuria, but urinary infections, kidney disease and other conditions can also cause blood in urine.

Is nausea an early sign of kidney stones?

Nausea can accompany kidney-stone pain and may occur with or without vomiting.

What is the most reliable way to confirm a kidney stone?

A medical evaluation using the symptoms and examination together with urine or blood tests and appropriate imaging is more reliable than symptoms alone.

Can early kidney stones go away on their own?

Some smaller stones can pass naturally. Whether observation is appropriate depends on the stone's size, location, symptoms, obstruction and the patient's overall health.

Conclusion

Recognizing the early warning signs of kidney stones can help people seek appropriate evaluation before complications develop. New one-sided flank pain, blood in the urine, urinary urgency, burning urination, nausea and changes in urine can all occur with urinary stones.

At the same time, kidney stones can be silent, and many of these symptoms can also occur with urinary infections or other conditions. Symptoms alone cannot determine the presence, size or location of a stone.

If kidney-stone symptoms develop, appropriate urine testing and imaging can identify the stone and determine whether observation or active treatment is needed. Fever, chills, very low urine output, inability to urinate, severe pain or repeated vomiting require prompt medical attention.

For individualized kidney evaluation and management, 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. The early warning signs described above can occur with kidney stones but may also result from urinary infection, kidney disease, bladder conditions or other medical problems. Do not self-diagnose or take antibiotics, painkillers, stone medicines or herbal remedies without appropriate professional guidance. Fluid intake should be individualized, particularly for people with kidney disease, heart conditions, urinary obstruction or fluid restrictions. Seek prompt medical attention for severe or worsening pain, fever or chills, repeated vomiting, very little or no urine, inability to urinate, or sudden deterioration in health. Consult Dr. Sandip Prabhakar Bhurke or another qualified healthcare professional for an appropriate diagnosis and treatment plan.