Many people searching for “kidney stone without surgery” want to know whether a stone can disappear or pass naturally without an operation.

In selected patients, yes.

Small stones, particularly those located in the ureter and not causing complications, may pass naturally with observation, appropriate pain management and, in selected cases, medicines that facilitate stone passage. The likelihood depends strongly on the stone's size and location.

However, “without surgery” does not mean that every kidney stone can safely be treated at home.

A stone may require active removal when it is too large to pass, causes persistent obstruction, produces uncontrolled pain, contributes to kidney-function deterioration or is associated with infection.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized kidney evaluation for patients with stones and associated kidney-function concerns.

What Determines Whether a Stone Can Pass on Its Own?

There is no single rule that applies to every kidney stone.

A specialist generally considers:

• Stone size

• Stone location

• Number of stones

• Degree of obstruction

• Kidney function

• Presence of infection

• Severity and persistence of pain

• Urinary tract anatomy

• Previous stone history

• Stone composition when known

A small ureteral stone may have a reasonable chance of spontaneous passage, whereas a large renal stone may remain in the kidney and require active treatment.

EAU guidance notes that spontaneous passage becomes less likely as stone size increases and varies substantially according to the stone's location within the ureter.

Which Kidney Stones Are More Likely to Pass Naturally?

Generally, smaller stones are more likely to pass than larger stones.

Location is also important.

A small stone close to the bladder may have a better chance of passing than a similarly sized stone higher in the ureter.

For example, EAU data report higher spontaneous-passage rates for smaller distal ureteral stones than for stones located higher in the ureter.

This is why an ultrasound or CT report should be reviewed before deciding that observation is appropriate.

Can a 4 mm Kidney Stone Pass Without Surgery?

A stone around 4 mm is relatively small and may pass naturally, depending on where it is located and whether complications are present.

Observation may be considered when:

• Pain is manageable

• There is no infection

• Kidney function is stable

• Urine flow is not dangerously obstructed

• The patient can maintain hydration

• Follow-up is possible

However, even a small stone can become problematic if it causes obstruction or infection.

The size alone should therefore not be used to decide treatment.

What About a 5 mm, 6 mm or 7 mm Stone?

As stone size increases, spontaneous passage generally becomes less predictable.

Some stones in this range may still pass, particularly when located in the distal ureter, while others may remain stuck and eventually require removal.

The EAU specifically supports medical expulsive therapy with alpha-blockers as one treatment option for selected distal ureteral stones larger than 5 mm when active removal is not indicated. Such use is off-label and requires medical supervision.

A doctor should therefore assess the stone rather than relying on its measurement alone.

Can Medicines Help a Kidney Stone Pass?

In selected patients, medicines may be used as part of medical expulsive therapy.

An alpha-blocker such as tamsulosin may be considered for some distal ureteral stones.

The purpose is to help relax the ureter and facilitate passage in appropriate patients.

However:

• It does not physically break every stone.

• It is not appropriate for every stone.

• It should not be used as a substitute for urgent treatment when complications are present.

• Side effects and other medicines must be considered.

EAU guidance recommends alpha-blockers as one option for selected distal ureteral stones greater than 5 mm when active removal is not indicated.

Never start a prescription stone medicine without medical advice.

Can Medicine Dissolve a Kidney Stone?

Most kidney stones cannot simply be dissolved with tablets.

Stone composition matters.

Certain uric acid stones can sometimes be dissolved through medically supervised urine alkalinization. This is different from trying to dissolve a calcium-based stone with a general “stone-breaking” tablet.

For this reason, the phrase “kidney stone medicine” should not be interpreted as meaning that every stone can be dissolved.

A doctor may recommend urine testing, blood tests, imaging and, when available, stone analysis to understand the type of stone.

Can Drinking More Water Remove a Kidney Stone?

Appropriate fluid intake can be useful while a small stone is being managed conservatively.

Water can help maintain urine flow and may support passage of a stone that is already capable of passing.

But drinking excessive quantities of water does not force a blocked stone through the urinary tract.

If a stone is causing significant obstruction, infection or severe symptoms, increasing water intake is not a substitute for medical treatment.

People with kidney failure, heart failure or prescribed fluid restrictions also need individualized fluid advice. NIDDK recommends discussing fluid needs with a healthcare professional when other health conditions limit how much a person should drink.

What Can Be Done at Home While a Small Stone Is Passing?

When a doctor has determined that observation is appropriate, supportive care may include:

Follow the Prescribed Pain-Relief Plan

Pain medicines can help manage renal colic.

NSAIDs are commonly effective for renal colic, but they may not be appropriate for people with reduced kidney function, dehydration, certain cardiovascular conditions or other contraindications.

Drink Fluids According to Medical Advice

Adequate fluid intake can support urine production, but avoid forcing excessive amounts.

Take Prescribed Medicines Correctly

If a doctor has prescribed an alpha-blocker or another medicine, follow the recommended dose and duration.

Monitor Symptoms

Pay attention to:

• Increasing pain

• Fever

• Chills

• Vomiting

• Urine output

• Burning urination

• Blood in urine

Attend Follow-Up

A stone that was expected to pass should not simply be forgotten.

Follow-up may confirm whether the stone has passed and whether urine flow and kidney function remain satisfactory.

Can Kidney Stone Pain Go Away Without the Stone Passing?

Yes, pain may temporarily improve even if the stone remains present.

This is one reason symptom improvement alone does not always prove that a stone has passed.

A stone may stop causing severe colic because it changes position, becomes less obstructive or no longer irritates the ureter in the same way.

Follow-up imaging may sometimes be necessary to confirm stone passage, particularly when obstruction was previously present.

What Happens If the Stone Does Not Pass?

If observation is no longer appropriate, the doctor may recommend active stone treatment.

Reasons can include:

• Persistent obstruction

• Ongoing or recurrent severe pain

• Low likelihood of spontaneous passage

• Declining kidney function

• Infection

• Increasing stone size

• Complications affecting the urinary tract

EAU guidance identifies persistent pain, persistent obstruction, renal insufficiency and a low likelihood of spontaneous passage among reasons for ureteral stone removal.

Is Laser Treatment Considered “Without Surgery”?

This depends on what a person means by “surgery.”

Ureteroscopy with laser lithotripsy is a procedure, even though it usually does not involve an external incision.

A thin instrument is passed through the natural urinary passage to reach the stone, and laser energy can fragment it.

Therefore, if someone specifically wants no procedure at all, laser treatment is not considered a non-procedural option.

However, it can be an alternative to open surgery for selected stones.

What About ESWL?

Shock wave lithotripsy (SWL or ESWL) breaks a stone using externally generated shock waves.

It does not require an incision into the kidney.

However, it is still an active stone-removal procedure, not the same as allowing a stone to pass naturally.

Whether it is suitable depends on factors such as:

• Stone size

• Location

• Density

• Anatomy

• Skin-to-stone distance

• Obstruction

• Overall health

NIDDK lists shock wave lithotripsy among established treatments used to break kidney stones into smaller pieces so they can pass through the urinary tract.

When Is Treatment Without Surgery Not Appropriate?

Conservative treatment should not be continued when complications develop.

Active treatment may become necessary if there is:

Infection

An infected obstructed kidney can become a urological emergency.

Persistent Urinary Obstruction

A blocked ureter can interfere with drainage and potentially damage kidney function.

Declining Kidney Function

A stone may require urgent attention if kidney function is deteriorating.

Uncontrolled Pain

If adequate medical treatment cannot control renal colic, drainage or stone removal may be necessary.

Very Low or Absent Urine

Markedly reduced urine output or inability to urinate requires urgent assessment.

Kidney Stone With Fever: Why You Should Not Wait

A kidney stone accompanied by fever or chills should not be treated as an ordinary stone that simply needs more water.

An obstructed urinary system with infection can become dangerous.

EAU guidance describes an obstructed kidney with signs of urinary infection and/or anuria as a urological emergency requiring urgent decompression in appropriate cases.

Depending on the situation, emergency drainage may involve a ureteral stent or nephrostomy, followed by definitive stone treatment after the infection has been appropriately managed.

Can Large Kidney Stones Be Treated Without Surgery?

The likelihood of successfully managing a large stone without active removal is generally lower than for a small stone.

A large stone may remain inside the kidney without immediately causing pain, but that does not necessarily mean it should be ignored.

Treatment decisions depend on:

• Exact size

• Location

• Stone burden

• Growth

• Obstruction

• Infection

• Kidney function

• Symptoms

For larger stones, procedures such as ureteroscopy, SWL or PCNL may be considered depending on the individual case.

What Tests Are Needed Before Choosing Conservative Treatment?

A specialist may recommend:

Ultrasound

Useful for detecting many stones and assessing urinary tract dilation.

CT Scan

A non-contrast CT may provide detailed information about stone size, location, number and obstruction when clinically appropriate.

Urine Testing

Urinalysis can assess:

• Blood

• Infection

• Crystals

• Other abnormalities

Blood Tests

These may include:

• Creatinine

• eGFR

• Electrolytes

• Blood count

The appropriate testing depends on the patient's symptoms and medical history.

How Long Should You Wait for a Stone to Pass?

There is no single waiting period suitable for everyone.

A doctor may recommend observation when the stone has a reasonable chance of passing and there are no complications.

The patient may then require periodic clinical or imaging assessment.

If pain becomes persistent, infection develops, obstruction continues or kidney function deteriorates, waiting may no longer be appropriate.

Can Diet Help a Kidney Stone Pass?

Diet does not usually make an existing stone disappear immediately.

However, dietary measures can be important for preventing future stones.

Depending on the stone type and metabolic evaluation, a doctor may advise changes involving:

• Fluid intake

• Sodium

• Animal protein

• Calcium intake

• Oxalate-containing foods

• Citrate intake

NIDDK notes that prevention strategies depend on what caused the stone and may involve changes in fluid intake and diet.

Do not unnecessarily eliminate dietary calcium without professional guidance, particularly if you form calcium stones.

What Happens After a Stone Passes?

Passing the stone is not necessarily the end of treatment.

If possible, collecting the stone for analysis can help identify its composition.

For recurrent or high-risk stone formers, a doctor may also consider:

• Metabolic evaluation

• Blood tests

• 24-hour urine testing

• Follow-up imaging

• Dietary assessment

Understanding why the stone formed can help reduce the chance of recurrence.

Kidney Stone Without Surgery at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation for patients with kidney stones and related kidney-function concerns.

Depending on the clinical situation, assessment may include:

• Reviewing ultrasound or CT findings

• Evaluating stone size and location

• Checking creatinine and eGFR

• Assessing urinary obstruction

• Reviewing urine-test results

• Evaluating recurrent stone history

• Identifying kidney-function complications

• Reviewing medicines and fluid intake

• Advising appropriate preventive measures

• Coordinating with a urologist when a stone-removal procedure is required

The objective is to determine whether observation and medical management are reasonable or whether active stone removal would provide safer treatment.

Frequently Asked Questions

Can a kidney stone be removed without surgery?

Some small stones can pass naturally without a procedure. Selected ureteral stones may also be managed with medicines and observation. The decision depends on size, location and whether complications are present.

What is the best medicine for kidney stones without surgery?

There is no single medicine for every stone. Pain medicines may be used for renal colic, and selected distal ureteral stones may be treated with medical expulsive therapy under medical supervision.

Can a 5 mm kidney stone pass without surgery?

A 5 mm stone may pass naturally in some patients, particularly depending on its location. Medical assessment is important before deciding on observation.

Can a 10 mm kidney stone pass naturally?

Spontaneous passage becomes less likely as stone size increases. A 10 mm stone requires specialist assessment to determine whether observation is reasonable or active removal is more appropriate.

Can drinking water remove kidney stones?

Adequate fluid intake may support passage of a stone that is already capable of passing, but excessive water does not guarantee passage and can be unsafe in some conditions.

Can lemon water dissolve kidney stones?

Lemon and other citrus beverages contain citrate, which may have a role in preventing some stones. However, lemon water should not be considered a guaranteed method for dissolving an existing kidney stone.

Can kidney stones disappear on their own?

Some small stones can pass spontaneously. A stone that remains in the kidney or ureter may not disappear simply because symptoms improve.

Is laser treatment necessary for every kidney stone?

No. Some stones can be observed or managed medically. Laser lithotripsy is considered when active removal is appropriate and the stone's characteristics make ureteroscopy suitable.

Conclusion

Kidney stone without surgery is possible in selected patients, particularly when the stone is small, likely to pass and not causing infection, persistent obstruction, uncontrolled pain or kidney-function deterioration.

Observation, appropriate pain management, individualized fluid intake and selected medical expulsive therapy may allow some ureteral stones to pass naturally.

However, a patient should not assume that every stone can be treated at home. Larger stones, persistent obstruction, declining kidney function, severe symptoms or infection may require active intervention.

The safest approach is to determine the stone's size and location, evaluate kidney function and identify any complications before deciding between observation and stone removal.

For individualized kidney-stone and kidney-function evaluation, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and should not be considered medical diagnosis, treatment or individualized medical advice. Whether a kidney stone can be managed without a procedure depends on its size, location, obstruction, infection status, kidney function, symptoms and other patient-specific factors. Do not attempt to force a stone to pass by drinking excessive amounts of water or by taking unprescribed medicines, antibiotics or herbal remedies. Some medicines used for stone passage are appropriate only for selected patients and may have side effects or contraindications. Fever or chills with suspected urinary obstruction, very little or no urine, persistent vomiting, severe uncontrolled pain, confusion or rapidly worsening symptoms require urgent medical evaluation. Consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist or urologist for an individualized treatment plan.