Kidney stones can start quietly, with no noticeable symptoms, and then cause intense pain when a stone moves into the urinary tract. For some people, a small stone passes naturally with medical guidance and supportive care. For others, a larger stone, urinary blockage, repeated pain, infection, or difficulty passing the stone may require a procedure.
The right treatment isn’t the same for every patient. Stone size, location, composition, symptoms, kidney function, and the presence of infection all influence the treatment decision. Modern stone management includes observation and medication as well as minimally invasive procedures that can break or remove stones when necessary.
Understanding how kidney stones form and knowing the difference between non-surgical and surgical treatment options can help patients make informed decisions with their urologist.
What Are Kidney Stones?
Kidney stones are hard, solid deposits that develop when certain minerals and salts become highly concentrated in urine and form crystals. These crystals can gradually collect and grow into a stone inside the kidney.
Some stones remain in the kidney without causing symptoms. Problems often begin when a stone moves from the kidney into the ureter, the narrow tube that carries urine toward the bladder. If the stone becomes lodged in the ureter, it can interfere with urine flow and cause significant pain.
Kidney stones can vary considerably in size. Some are small enough to pass naturally, while larger stones may need active treatment.
What Causes Kidney Stones?
There isn’t always one single reason why a person develops kidney stones. They can form when urine contains high concentrations of substances that can create crystals, including calcium, oxalate, phosphorus, and uric acid. Not drinking enough fluid can also make urine more concentrated, increasing the opportunity for crystals to develop.
Several factors may increase the likelihood of stone formation, including:
- Low fluid intake
- A previous history of kidney stones
- Certain dietary patterns
- High levels of stone-forming minerals in urine
- Some medical conditions
- Certain medications or supplements
- Family history of kidney stones
- Being overweight or having obesity
- Some metabolic or urinary tract conditions
Kidney stones can also differ in composition. Calcium stones are the most common, while other types include uric acid, struvite, and cystine stones. Identifying the type of stone can help doctors understand why it formed and how future stones may be prevented.
Common Symptoms of Kidney Stones
A kidney stone may not cause symptoms while it remains in the kidney. Symptoms often appear when it moves into the urinary tract or blocks urine flow.
Common symptoms include:
- Sharp pain in the back or side
- Pain that spreads toward the lower abdomen or groin
- Pain that comes and goes in waves
- Burning or discomfort while urinating
- A frequent urge to urinate
- Blood in the urine
- Cloudy or unpleasant-smelling urine
- Nausea or vomiting
- Difficulty passing urine
The intensity of pain doesn’t necessarily tell you how large the stone is. Even a relatively small stone can cause severe pain if it becomes lodged in a narrow part of the urinary tract.
When Is a Kidney Stone an Emergency?
Most kidney stones don’t cause permanent kidney damage when appropriately evaluated and treated, but certain situations require urgent medical attention.
Seek prompt medical care if kidney stone symptoms are accompanied by:
- Fever or chills
- Persistent vomiting
- Severe or worsening pain
- Difficulty or inability to urinate
- Signs of a urinary infection
- Significant weakness or feeling seriously unwell
An infected kidney that is also obstructed by a stone is a urological emergency. In such situations, simply trying to wait for the stone to pass may not be appropriate. Urgent drainage of the urinary system may be required before definitive stone treatment is performed.
How Are Kidney Stones Diagnosed?
Diagnosis usually starts with a discussion about symptoms and medical history. The doctor may ask about the location and pattern of pain, urinary symptoms, previous stones, medications, diet, and other relevant health factors.
Urine and blood tests can provide useful information. Imaging may also be needed to determine the stone’s size and location and to check whether it is causing an obstruction.
Depending on the situation, a healthcare professional may recommend imaging such as ultrasound or CT scanning. The choice of test depends on the patient’s symptoms, clinical situation, and the information the doctor needs.
If a patient passes a stone, analysing the stone can also help identify its composition. In people with recurrent stones, additional urine testing may be used to look for factors that increase the risk of future stone formation.
Can Kidney Stones Pass Without Surgery?
Yes. Many small stones can pass through the urinary tract without an invasive procedure. Whether this is a suitable approach depends on factors such as stone size, location, symptoms, urinary obstruction, infection, and the patient’s overall condition.
A doctor may recommend observation for a small stone when there are no complications. During this period, the patient may receive advice about fluid intake and pain management. In selected cases, medication may also be prescribed to help facilitate stone passage.
This doesn’t mean every painful stone should simply be left alone. Follow-up may be necessary to confirm that the stone has passed and that kidney function and urine drainage remain satisfactory.
Non-Surgical Treatment for Kidney Stones
Non-surgical management can be appropriate for selected patients, particularly when the stone is small and there are no signs of infection or significant obstruction.
1. Observation and Hydration
For a stone that is likely to pass naturally, a doctor may recommend monitoring the condition while maintaining appropriate fluid intake. Drinking enough water can help maintain urine flow, although people with certain kidney, heart, or other medical conditions may need individual fluid advice.
2. Pain Management
Kidney stone pain can be intense. Doctors may recommend appropriate pain-relieving medication based on the patient’s health and medical history. Non-steroidal anti-inflammatory drugs are recommended as a first-choice option for renal colic in current European Association of Urology guidance when suitable for the patient.
3. Medication to Help Stone Passage
In selected cases, doctors may prescribe medication that relaxes the ureter and can help a stone pass. This approach isn’t suitable for every stone, so medication should be taken only after medical evaluation.
4. Dietary and Lifestyle Changes
If a person has recurrent kidney stones, prevention becomes an important part of treatment. Depending on the type of stone and metabolic findings, a doctor or dietitian may recommend changes to fluid intake, salt consumption, dietary protein, or specific foods.
The advice should be personalised. A diet that helps one type of stone isn’t necessarily appropriate for another.
When Is a Procedure Needed?
A kidney stone may need active removal when it is too large to pass naturally, causes persistent obstruction, produces ongoing or severe symptoms, contributes to infection, grows over time, or threatens kidney function. Patient preference and individual circumstances can also influence the decision.
The good news is that “surgical treatment” for kidney stones doesn’t always mean traditional open surgery. Modern urology commonly uses minimally invasive procedures to break or remove stones.
Shock Wave Lithotripsy
Shock wave lithotripsy, often called SWL or ESWL, uses externally generated shock waves to break a kidney stone into smaller fragments. These fragments can then pass through the urinary tract.
SWL doesn’t require an incision into the kidney. Its effectiveness depends on several factors, including stone size, location, composition, and the patient’s anatomy. Some patients may need more than one treatment session.
It can be a suitable option for selected kidney or ureteral stones, but it isn’t automatically the best choice for every stone.
Ureteroscopy and Laser Stone Treatment
Ureteroscopy is a minimally invasive procedure in which a thin instrument is passed through the natural urinary passage to reach the stone. Once the stone is located, the urologist can remove it or break it into smaller pieces.
Modern ureteroscopy can use laser technology to fragment stones. The procedure can be useful for stones in the ureter and kidney, depending on their size and location. A temporary ureteral stent may sometimes be placed afterward to support urine drainage or allow the urinary tract to heal.
Compared with SWL, ureteroscopy generally offers a higher chance of becoming stone-free after a single procedure in many situations, but it is an invasive procedure and carries its own risks. The choice should be based on individual circumstances rather than assuming one treatment is universally better.
Percutaneous Nephrolithotomy
For larger kidney stones, percutaneous nephrolithotomy, or PCNL, may be recommended. In this procedure, the urologist creates a small access route through the back into the kidney and uses specialised instruments to break and remove the stone.
PCNL is particularly important for large renal stones and remains a standard treatment option for large kidney calculi.
Because the procedure involves access through the skin into the kidney, it is more invasive than treatments such as SWL or ureteroscopy. The benefits and risks need to be discussed with the treating urologist.
Non-Surgical vs Surgical Treatment: Which Option Is Right?
There isn’t one treatment that is best for every kidney stone. The choice depends on the stone’s size, location, composition, symptoms, degree of urinary obstruction, presence of infection, kidney function, and the patient’s overall health.
For smaller stones that are likely to pass naturally, a doctor may recommend observation along with appropriate fluids, pain management, and medication when required. This approach avoids an invasive procedure when it is medically reasonable.
When a stone is too large to pass, causes persistent obstruction or pain, or is associated with other complications, active treatment may be recommended. Depending on the situation, this can include shock wave lithotripsy, ureteroscopy with laser treatment, or percutaneous nephrolithotomy.
The important point is that treatment should be selected based on the individual stone rather than simply choosing between a “non-surgical” and “surgical” option. A urologist can assess the stone and explain which approach is most appropriate.
Preventing Kidney Stones From Coming Back
Having a kidney stone once doesn’t necessarily mean you’ll develop another, but people with a previous history of stones can have a higher risk of recurrence. Prevention should focus on understanding what contributed to stone formation in the first place.
Drinking enough fluids is an important part of prevention for many people. Depending on the type of stone, doctors may also recommend changes to salt intake, dietary habits, animal protein, or specific foods.
If stones occur repeatedly, additional testing may help identify factors that are increasing the risk. A 24-hour urine test, for example, can provide information about urine volume and levels of substances associated with stone formation.
Rather than making major dietary restrictions on your own, it’s better to identify the type of stone and discuss suitable preventive measures with a healthcare professional.
Finding the Right Care for Kidney Stones
People experiencing persistent kidney stone pain, urinary symptoms, recurrent stones, or suspected urinary blockage should seek evaluation from a qualified urology specialist. Proper assessment can help determine whether the stone is likely to pass naturally or whether active treatment may be necessary.
If you’re looking for Kidney stone Treatment in Trivandrum, NIMS Micro Hospitals can be considered for professional evaluation and management of kidney and urinary tract conditions. The appropriate treatment can be determined after assessing the patient’s symptoms, investigations, stone size and location, and overall health.
Treatment isn’t only about removing the current stone. Understanding why it formed and taking appropriate steps to reduce the possibility of future stones can also be an important part of long-term kidney care.
What to Remember About Kidney Stones
Kidney stones can range from tiny deposits that pass naturally to larger stones that require a medical procedure. Their treatment depends on several factors, including stone size, location, composition, urinary obstruction, infection, and kidney function.
Some small, uncomplicated stones may be managed with observation, appropriate fluid intake, pain relief, and medication under medical supervision. When a stone cannot pass naturally or causes significant problems, procedures such as shock wave lithotripsy, ureteroscopy with laser fragmentation, or percutaneous nephrolithotomy may be considered.
If you develop severe pain in the back or side, blood in the urine, difficulty urinating, fever, chills, or persistent vomiting, seek medical attention rather than waiting for the symptoms to settle on their own. Timely assessment can help identify the cause and reduce the risk of complications.