What are bladder stones?

Bladder stones are hard mineral deposits that form inside the urinary bladder. They usually develop when urine remains in the bladder for a prolonged period and becomes concentrated, allowing minerals to crystallize. Bladder stones can cause urinary discomfort, frequent urination, difficulty passing urine, or blood in the urine. Treatment depends on the stone's size, symptoms, and underlying cause.

The urinary bladder stores urine until it is passed out of the body. Normally, the bladder empties completely during urination. When urine remains in the bladder or its composition promotes crystal formation, minerals can gradually collect and form a bladder stone.

Bladder stones can vary in size. Some are small and may pass naturally, while larger stones may require a procedure to remove them.

What causes bladder stones?

Bladder stones commonly develop when the bladder does not empty completely.

Possible contributing factors include:

• Enlarged prostate (BPH) causing obstruction of urine flow.
• Urethral stricture or narrowing of the urinary tract.
• Nerve-related bladder problems.
• Certain urinary tract conditions.
• Foreign material or medical devices within the bladder.
• Concentrated urine and mineral crystallization.

In adults, bladder outlet obstruction is an important underlying cause, particularly in older men with an enlarged prostate.

Are bladder stones the same as kidney stones?

No. Kidney stones form in the kidneys, while bladder stones form inside the bladder.

A kidney stone can sometimes travel down the urinary tract and reach the bladder, but stones that remain or enlarge within the bladder are considered bladder stones.

Can bladder stones cause symptoms?

Yes. Symptoms may include:

• Pain or burning while urinating.
• Frequent urination.
• Difficulty starting urination.
• Interrupted urine flow.
• Lower abdominal discomfort.
• Blood in the urine.
• Difficulty completely emptying the bladder.

Some small bladder stones may cause few or no symptoms.

Can bladder stones cause urinary blockage?

Yes. A stone can occasionally obstruct the bladder outlet or interfere with urine flow, potentially causing difficulty passing urine.

If you are suddenly unable to urinate, seek prompt medical attention.

Who is more likely to develop bladder stones?

Bladder stones are more common in people who have conditions that prevent complete bladder emptying.

Men with enlarged prostate, urethral narrowing, or certain neurological bladder disorders may have an increased risk.

Do bladder stones always require treatment?

Not always. Small stones may sometimes pass naturally, but larger or symptomatic bladder stones often require removal.

Importantly, identifying and treating the underlying cause is also important because otherwise the stones may recur.

When Should I See a Urologist?

You should consider a urological evaluation if you have:

• Blood in the urine.
• Recurrent urinary tract symptoms.
• Pain or burning while urinating.
• Difficulty passing urine.
• Interrupted urine stream.
• Frequent or urgent urination.
• Recurrent bladder stones.
• A known enlarged prostate or urethral stricture.

Sudden inability to urinate requires prompt medical assessment.

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 other urological conditions. A detailed evaluation can help identify the stone and determine whether an underlying urinary obstruction or other condition needs treatment.