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Urology • Condition

Bladder Stone

Medical term: Vesical Calculus

A bladder stone is a hard collection of minerals that forms inside the urinary bladder. It commonly develops when urine remains behind after urination.

Removing the stone relieves the immediate problem, but finding and treating the reason for incomplete bladder emptying is essential to reduce recurrence.

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Seek immediate medical care

Bladder Symptoms With Warning Signs?

Obtain urgent assessment if you have:

  • A painful, full bladder with sudden inability to pass urine.
  • Fever, chills, confusion or marked weakness with urinary symptoms.
  • Severe or rapidly worsening lower-abdominal pain.
  • Heavy visible blood or clots in urine, especially if flow is blocked.
  • Vomiting, dehydration or inability to keep fluids down.
  • A urinary catheter that has stopped draining with bladder pain or swelling.

Acute urinary retention and urinary infection with systemic illness can require emergency drainage and treatment. Do not force large amounts of fluid when you are unable to urinate.

What is a Bladder Stone?

Minerals normally dissolved in urine can crystallise, collect and harden inside the bladder. Stones range from tiny particles to large single stones and may be smooth, irregular, soft or very hard depending on composition.

Most adult bladder stones are secondary stones: they form because another condition causes urinary stasis, infection or a foreign surface. A stone can also migrate from the kidney or ureter into the bladder and continue to grow there.

Doctor's Insight

A bladder stone is often evidence of an emptying problem, not simply a hydration problem. Treating the stone without assessing urine flow and residual urine may leave the main cause untouched.

What Symptoms Can a Bladder Stone Cause?

Interrupted urine flow The stream stops and starts or changes with position.
Pain or burning Discomfort occurs above the pubic bone or during urination.
Frequency and urgency Urination becomes more frequent by day or night.
Blood in urine Urine may look pink, red or brown or test positive for blood.

Other presentations include:

  • Difficulty starting urination, straining or incomplete emptying.
  • Pain that is worse near the end of urination or with movement.
  • Penile-tip, perineal or lower-abdominal discomfort.
  • Repeated urinary tract infections.
  • Sudden urinary retention.
  • No symptoms—the stone is discovered during imaging or cystoscopy.

Why Do Bladder Stones Form?

Enlarged prostate or outlet obstruction Benign prostate enlargement is a leading adult cause. Urethral narrowing, bladder-neck obstruction and other blockages can also leave urine behind.
Bladder nerve or muscle dysfunction Spinal, neurological or bladder-muscle conditions may prevent coordinated or complete emptying.
Long-term catheter or foreign material Catheters, sutures, mesh and other material can act as a surface on which crystals and infection-related deposits collect.
Bladder diverticulum or prolapse A bladder pocket or altered bladder position may trap urine and interfere with complete emptying.
Chronic infection Recurrent bacteria and urinary stasis can change urine chemistry and contribute to infection-related stones.
A stone arriving from the upper urinary tract A kidney or ureteric stone may enter the bladder, fail to pass and enlarge around its original core.
Reconstructed or augmented bladder Mucus, altered anatomy, urinary stasis, infection and foreign material can increase risk after urinary reconstruction.
Low urine volume and metabolic factors Concentrated urine and stone-forming chemistry can contribute. In children, causes differ and require paediatric assessment.

Bladder Stone or Kidney Stone?

Typical bladder-stone pattern Lower-abdominal pain, stop-start flow, burning, frequency, terminal blood in urine, retention or recurrent infection.
Typical kidney or ureteric-stone pattern Severe flank pain that may travel towards the groin, often with nausea, vomiting or blood in urine.
Important overlap Symptoms and stone locations can overlap, and stones can exist in more than one part of the urinary tract. Imaging confirms location and guides treatment.

Questions Your Doctor May Ask

How has your urine flow changed?

Mention weak or stop-start flow, straining, incomplete emptying, retention and whether changing position restarts the stream.

Have you had infections, stones or urinary procedures?

Previous kidney stones, recurrent urine infections, catheters, bladder surgery and urinary reconstruction help identify the cause.

Are there prostate, neurological or pelvic conditions?

Prostate enlargement, urethral narrowing, spinal injury, diabetes, neurological disease, prolapse and constipation may affect emptying.

What medicines and fluids do you take?

Bring a complete medicine list and describe usual fluid intake, diet, supplements and previous stone analysis or prevention advice.

How is a Bladder Stone Diagnosed?

1 History and physical examination

The clinician reviews urinary, infection and stone symptoms and examines the abdomen, genitals and nervous system. A prostate examination may be appropriate in men.

2 Urine tests

Urinalysis checks for blood, pH, crystals and signs of infection. A urine culture is selected when infection is possible.

3 Ultrasound first

Ultrasound can show a bladder stone and measure urine remaining after urination without using radiation.

4 CT, cystoscopy or X-ray when needed

Persistent symptoms after a negative ultrasound, uncertain anatomy or concern for another urinary condition may require more sensitive imaging or direct inspection of the bladder.

5 Find the reason it formed

Urine-flow testing, post-void residual, blood and metabolic tests, upper-tract imaging and urethral assessment are selected according to risk. Retrieved stones should be analysed.

How are Bladder Stones Treated?

The appropriate treatment depends on stone size, number and composition; symptoms and infection; urethral access; bladder anatomy; and the condition that caused the stone.

Observation in selected cases A small asymptomatic stone that has migrated from the upper tract may sometimes be observed when bladder emptying is normal. Most symptomatic or secondary bladder stones need active treatment.
Transurethral cystolithotripsy A telescope passes through the urethra into the bladder. The stone is fragmented mechanically, pneumatically or with a laser, and the pieces are washed or suctioned out. This is the usual adult approach. Read the detailed CLT guide →
Percutaneous cystolithotripsy The bladder is reached through a small lower-abdominal channel when a transurethral approach is unsuitable or risks urethral injury.
Open stone removal Very large stones or complex anatomy may require an incision into the bladder. This is now less common than endoscopic treatment.
Dissolution for selected uric-acid stones A known radiolucent or uric-acid bladder stone may occasionally be dissolved by clinician-supervised urine alkalinisation with regular pH and safety monitoring. This does not work for most stone types.
Treat the underlying cause Prostate obstruction, urethral narrowing, infection, catheter issues, bladder dysfunction, diverticulum or another cause may be treated at the same session or in a planned second stage.

What Can You Expect After Endoscopic Treatment?

A temporary catheter may drain the bladder after surgery. Mild burning, urgency and a small amount of blood can occur while the urinary lining heals. Recovery instructions vary with stone size and any simultaneous prostate or bladder procedure.

Contact the treating team urgently for:

  • Fever, chills, increasing pain or feeling significantly unwell.
  • Inability to urinate after catheter removal.
  • A catheter that stops draining with a painful full bladder.
  • Heavy bleeding, large clots or worsening rather than improving symptoms.

How Can Recurrence Risk Be Reduced?

  • Complete treatment for prostate or other bladder-outlet obstruction.
  • Follow an individual bladder-emptying or catheter-care plan.
  • Treat documented urinary infection with the prescribed medicine.
  • Maintain clinician-advised hydration unless fluid restriction is required.
  • Use stone analysis and metabolic results to personalise prevention.
  • Attend follow-up when the underlying cause cannot be fully corrected.

Removing the Stone is Only Half the Plan

Recurrence prevention is strongest when the bladder empties better and the individual stone-forming or infection risk is addressed. General hydration advice cannot replace this cause-specific treatment.

What Should You Avoid?

  • Do not force fluids if you cannot pass urine.
  • Do not assume every bladder stone can be passed naturally.
  • Do not take leftover antibiotics for recurrent urinary symptoms.
  • Do not use unmonitored alkalising products to try to dissolve a stone.
  • Do not ignore visible blood in urine, fever or repeated infections.

Myth vs Fact

Myth A bladder stone is simply a kidney stone in a different place.
Fact Some stones migrate from the kidney, but many form inside the bladder because urine is retained there.
Myth Drinking more water will dissolve every bladder stone.
Fact Most stones do not dissolve with water and symptomatic secondary stones are unlikely to pass without treatment.
Myth Once the stone is removed, the problem is permanently solved.
Fact Recurrence remains possible unless the emptying, infection, foreign-body or metabolic cause is addressed.

Frequently Asked Questions

Can a bladder stone pass by itself?

A small stone that recently entered from the upper urinary tract may pass when the bladder and outlet function normally. Stones formed because of urinary stasis are often symptomatic and unlikely to pass spontaneously.

Can an enlarged prostate cause bladder stones?

Yes. Prostate obstruction can leave residual urine, allowing crystals to collect and stones to enlarge. The stone and prostate problem may both need treatment.

Does cystolitholapaxy involve an external cut?

Transurethral cystolitholapaxy usually reaches the bladder through the natural urinary passage without an abdominal incision. Percutaneous or open access is reserved for selected situations.

Can bladder stones return?

Yes. Risk is higher when incomplete emptying, chronic infection, a catheter, reconstructed bladder or stone-forming chemistry persists. Follow-up is individualised.

Can children develop bladder stones?

They can, although the condition is uncommon. Hydration, nutrition, infection, anatomy and metabolic causes differ from adults, so children need specialist paediatric assessment rather than an adult treatment plan.

Related Patient Guides

Bladder stones can overlap with upper-tract stones, prostate obstruction, urinary retention and haematuria.

Condition Kidney Stones Renal Calculi Read guide → Condition Enlarged Prostate Benign Prostatic Hyperplasia Read guide → Urgent Symptom Unable to Pass Urine Acute Urinary Retention Read guide → Symptom Blood in Urine Haematuria Read guide → Procedure CLT Cystolithotripsy / Bladder-Stone Removal Read procedure guide →

A Note From Our Doctors

The information on this page is intended to help you understand your condition. It should not be considered a diagnosis or a substitute for a consultation with a qualified medical professional.

Every patient is unique. The same symptom can have different causes in different individuals, and the most appropriate investigations and treatment depend on your medical history, examination findings, age, existing medical conditions and test results.

At SR Speciality Hospital, we believe in treating the whole patient—not just a symptom, scan or laboratory report. Every treatment plan is individualised after careful medical evaluation.

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