Can bladder stones pass naturally?

Some small bladder stones may pass naturally through the urine, but many bladder stones—especially larger or symptomatic stones—may require medical removal. Whether a stone can pass depends on its size, location, urinary flow, and whether there is an underlying problem such as an enlarged prostate or urethral stricture.

Bladder stones form inside the urinary bladder and can vary considerably in size. A small stone may sometimes leave the bladder during urination, while a larger stone may remain in the bladder and continue to cause symptoms.

Can small bladder stones pass on their own?

Yes, some small bladder stones can pass naturally.

This is more likely when:

• The stone is small.
• Urine can flow freely.
• The bladder empties properly.
• There is no significant urinary obstruction.
• The stone is not causing serious symptoms.

Your urologist can determine whether observation is reasonable based on your individual condition.

Can drinking more water help a bladder stone pass?

Adequate hydration can support normal urine flow and may help with the passage of a small stone.

However, drinking excessive amounts of water cannot reliably make a large bladder stone pass.

Fluid intake should also be appropriate for your overall health and any medical conditions you may have.

What happens if the stone does not pass?

A bladder stone that remains inside the bladder may:

• Continue irritating the bladder.
• Cause frequent urination.
• Cause painful urination.
• Cause blood in the urine.
• Interfere with urine flow.
• Increase the risk of recurrent urinary problems.

If the stone is causing persistent symptoms or obstruction, a urologist may recommend removal.

Can an enlarged prostate prevent a bladder stone from passing?

Yes, urinary obstruction can make natural passage difficult.

An enlarged prostate may narrow the bladder outlet and prevent the bladder from emptying effectively.

This can both contribute to bladder stone formation and make it less likely that a stone will pass naturally.

Can urethral stricture affect stone passage?

Yes. A urethral stricture narrows the urethra and can restrict urine flow.

When there is significant narrowing, a bladder stone may not pass easily and the underlying obstruction may also need evaluation.

Do bladder stones dissolve naturally?

Most bladder stones do not simply dissolve on their own.

The mineral composition of the stone and the underlying cause of its formation are important factors.

If a stone remains in the bladder and causes symptoms, mechanical removal may be required.

When does a bladder stone need removal?

A urologist may recommend stone removal when there is:

• Persistent or significant pain.
• Blood in the urine.
• Recurrent urinary infections.
• Difficulty passing urine.
• Urinary obstruction.
• A larger stone that is unlikely to pass.
• Recurrent bladder stones.
• An underlying condition contributing to stone formation.

How are bladder stones removed?

Many symptomatic bladder stones can be treated using endoscopic procedures, such as cystolitholapaxy.

During the procedure, the stone is broken into smaller fragments and removed through the urinary passage.

When Should I See a Urologist?

Seek medical evaluation if you have:

• Persistent urinary symptoms.
• Blood in the urine.
• Pain or burning while urinating.
• Difficulty passing urine.
• Recurrent urinary infections.
• A known bladder stone.
• Symptoms of enlarged prostate or urethral stricture.

If you suddenly cannot pass urine, seek prompt medical attention.

SCI International Hospital

At SCI International Hospital, New Delhi, Dr. Gautam Banga, Senior Consultant Urologist and Andrologist, evaluates patients with bladder stones, urinary obstruction, enlarged prostate, urethral stricture, and recurrent urinary problems. After assessing the stone and urinary flow, he can determine whether observation is appropriate or whether endoscopic stone removal may be required.