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PubMed This is a summary of 20 peer-reviewed journal articles Updated
Urology · Benign Prostatic Hyperplasia

Can BPH Cause Recurrent UTIs or Bladder Stones? Next Steps

At a Glance

Benign prostatic hyperplasia can cause repeated UTIs confirmed by a urine culture and bladder stones when an enlarged prostate blocks urine flow and the bladder does not empty fully. Testing helps determine whether stone removal alone or a procedure to relieve the blockage is needed.

In this answer

4 sections

01

Important Warning Signs

02

How BPH Increases the Risk of Infections and Stones

03

Recommended Diagnostic Workup

04

When is a Procedure Needed?

Yes, benign prostate enlargement caused by BPH (sometimes called a benign prostatic adenoma) can lead to recurrent urinary tract infections (UTIs) and bladder stones [1]. These complications can occur because an enlarged prostate may block the flow of urine, preventing the bladder from emptying completely [2]. When urine is left sitting in the bladder, it creates an environment where bacteria can multiply and minerals can crystallize, which increases the risk of infections and stone formation [1][3]. If you develop culture-proven, repeated UTIs or bladder stones, it often shifts the focus of your BPH management, prompting a discussion with your doctor about procedural options to relieve the blockage rather than relying on medications alone [4][5].

Important Warning Signs

Seek urgent or emergency medical care if you experience any of the following, as they can be signs of a serious infection or complete blockage [6][7]:

  • Inability to urinate
  • Fever or chills
  • Severe or worsening lower abdominal or flank (back) pain
  • Vomiting, confusion, or feeling acutely unwell
  • Visible blood in your urine

How BPH Increases the Risk of Infections and Stones

The link between an enlarged prostate and recurrent UTIs or stones is often bladder outlet obstruction [1]. This is a condition where the prostate squeezes the urethra and blocks urine flow [2]. This blockage forces the bladder to work harder, and over time, it may lose its ability to squeeze out all the urine [8]. The urine left behind is called the post-void residual (PVR) [7].

  • Urinary Tract Infections: Stagnant urine provides a breeding ground for bacteria [2]. It is important that UTIs are confirmed with a culture, because the frequent urge to urinate or burning sensations can be caused by BPH itself or other issues, not always an infection [9][10]. While antibiotics clear an active infection, they do not resolve a physical blockage [4]. If the prostate continues to prevent full emptying, bacteria may return [5].
  • Bladder Stones: When urine sits in the bladder for long periods, naturally occurring minerals can clump together and crystallize into bladder stones [3]. These stones can cause pain, worsen urinary symptoms, and harbor bacteria that further contribute to infections [11][12].

If you have BPH and are experiencing repeated UTIs or suspect bladder stones, your doctor will perform tests to understand the exact cause [9]. Not everyone needs every test; your doctor will tailor the evaluation to your situation [13].

Diagnostic Test What It Does Why It Is Used
Urinalysis & Culture Tests a urine sample for blood, inflammation, and bacteria. Confirms an actual infection rather than just BPH symptoms, and identifies which antibiotics will be effective [2][10].
Ultrasound & PVR Uses sound waves to image the urinary tract and measure urine left in the bladder. Assesses prostate size, checks for kidney swelling, identifies many stones, and measures incomplete emptying [6][7].
Cystoscopy Uses a small camera to look inside the urethra and bladder. Directly confirms bladder stones, checks for urethral strictures (scar tissue), and rules out other causes [9][13].
Urodynamics Measures bladder pressures during filling and emptying. Distinguishes whether incomplete emptying is caused by a blocked outlet or a weak bladder muscle [8][14].

Note on PVR: A single high post-void residual measurement does not automatically prove you have a fixed obstruction [8]. PVR can fluctuate, and a large residual can also result from a weak bladder muscle rather than a blockage [8][14].

When is a Procedure Needed?

The development of culture-proven recurrent UTIs or bladder stones is considered a complication of BPH [2][15]. Their presence often suggests that medications alone may not be sufficient, and a physical blockage might need to be addressed [4]. However, finding a bladder stone or having an infection does not automatically prove that prostate surgery is mandatory [16][12].

If you have bladder stones, they generally need to be actively removed, but this does not mean you must have simultaneous prostate surgery [16][12]. The decision to combine stone removal with a procedure to relieve the prostate obstruction depends on the severity of your blockage, symptom level, and overall health [16]:

  • Combined Procedures: If tests confirm a significant obstruction and consistently poor emptying, removing the stone while simultaneously performing a procedure to open the prostate is often considered [17][18]. This combined approach can improve urinary symptoms and reduce the risk of the stones or infections returning [18][16].
  • Staged or Conservative Approaches: If your BPH symptoms are mild and bladder emptying is adequate, your doctor may suggest removing the stones first and continuing with BPH medications, followed by close monitoring [19][20].

Because recurrent infections and stones can stem from multiple factors—including a weak bladder, underlying prostatitis, or other urinary tract abnormalities—a thorough workup ensures that a procedure will effectively target the root cause of your symptoms [1][12].

Common questions in this guide

Can an enlarged prostate cause repeated urinary tract infections?
Yes. BPH can narrow the urine channel so the bladder does not empty fully, leaving urine where bacteria can grow. A urine culture is important because burning or frequent urination can also be caused by BPH without an infection.
How can BPH lead to bladder stones?
An enlarged prostate can slow or block urine flow, allowing urine to remain in the bladder. Minerals in stagnant urine can crystallize into stones, and a stone can worsen urinary symptoms or harbor bacteria.
Do recurrent UTIs or a bladder stone mean I need prostate surgery?
Not always. Bladder stones generally need to be removed, but prostate treatment depends on whether testing shows significant blockage, consistently poor emptying, troublesome symptoms, and your overall health. Some people have the stone removed first and continue BPH medicine with monitoring.
What tests show whether BPH is causing my infections or stones?
Doctors may use a urine test and culture, ultrasound with a measurement of urine left after urination, cystoscopy, or urodynamic testing. These tests can identify infection or stones and help distinguish a blocked outlet from a weak bladder muscle. One high residual measurement alone does not prove a fixed blockage.
When is a procedure to treat BPH considered?
A procedure is often discussed when culture-proven UTIs keep returning or bladder stones develop, especially if tests show significant blockage and poor bladder emptying. Stone removal and a prostate procedure may be done together, or treatment may be staged when symptoms are mild and emptying is adequate.
What BPH symptoms require urgent medical attention?
Seek urgent or emergency care if you cannot urinate, have fever or chills, severe or worsening lower abdominal or flank pain, vomiting, confusion, feel acutely unwell, or see blood in your urine. These symptoms can signal a serious infection or complete blockage.

Related questions

Do Alpha-Blockers Cause Ejaculation or Erection Problems? How Do Tamsulosin, Alfuzosin, and Silodosin Compare? Which Medications Worsen Urinary Symptoms in Men With BPH? How Can Dizziness from BPH Alpha-Blockers Be Managed Safely? When Are Cystoscopy and Urodynamic Studies Needed for BPH?
Show more
Does Saw Palmetto Work for BPH? Evidence and Safety When Is a Trial Without Catheter Done After BPH-Related Retention? What Causes Nocturia with BPH and How Can You Reduce It? Can Diet and Exercise Shrink the Prostate with BPH? Is Blood in the Urine from BPH? Hematuria Evaluation Can BPH Raise PSA? When High PSA Needs Further Evaluation Is a Prostate MRI or Biopsy Needed for BPH Diagnosis? What Do Uroflowmetry and PVR Tests Show in Men With BPH? Can Untreated BPH Cause Bladder or Kidney Damage Over Time? How Often Should BPH Follow-Up Visits and Tests Occur? Will My Prostate Keep Growing? BPH Retention and Surgery Risk How Is Recurrent Urinary Retention From BPH Treated? What Symptoms and Measurements to Track for BPH Evaluation? Does BPH Raise Prostate Cancer Risk? How to Tell Them Apart

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References

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This page is for informational purposes only and does not constitute medical advice. A urologist or other healthcare professional should interpret your test results and discuss whether a procedure is appropriate for you.