Urinary Retention: What Doctors Do When You Can't Fully Empty Your Bladder

Urinary retention occurs when you're unable to completely empty your bladder. It can be uncomfortable and, if left untreated, may lead to infection, kidney damage or other complications. This guide explains how doctors diagnose and treat urinary retention, what to expect during your visit, and when to seek urgent care.

What Is Urinary Retention?

Urinary retention means urine stays in the bladder instead of passing out normally. There are two main types:

• Acute urinary retention: A sudden, painful inability to urinate. This is an emergency.
• Chronic urinary retention: A gradual inability to empty your bladder fully over weeks or months. You may still urinate but leave a significant amount behind.

Common Signs and Symptoms

People with urinary retention often notice:

• Weak or interrupted urine stream
• Feeling like you still need to go after urinating
• Frequent trips to the bathroom (especially at night)
• Lower abdominal discomfort or bloating
• Urinary tract infections from urine stagnation

If you experience sudden, severe inability to urinate and pain, seek immediate medical attention.

What Causes Urinary Retention?

A variety of factors can block urine flow or affect bladder muscle function:

• Enlarged prostate (benign prostatic hyperplasia, BPH)
• Prostate or bladder cancer
• Urethral strictures (scar tissue narrowing the urethra)
• Neurological conditions (e.g., spinal cord injury, multiple sclerosis, diabetes)
• Medications (some antihistamines, decongestants, antidepressants)
• Postoperative complications (anesthesia effects)
• Pelvic organ prolapse in women

How Doctors Diagnose Urinary Retention

A thorough evaluation helps pinpoint the cause and guide treatment. Your doctor may:

1. Review your medical history
   • Ask about symptoms, medications, prior surgeries and neurological issues.
2. Perform a physical exam
   • Palpate your lower abdomen to feel for bladder distension.
   • In men: check prostate size via a digital rectal exam.
   • In women: assess for pelvic organ prolapse.
3. Measure post‐void residual (PVR) urine
   • Use ultrasound or a catheter immediately after you urinate to measure leftover urine.
4. Urinalysis and urine culture
   • Detect infection, blood or signs of kidney problems.
5. Imaging tests
   • Ultrasound or CT scan to visualize bladder, kidneys and prostate.
6. Urodynamic studies (for chronic or unclear cases)
   • Measure bladder pressure and flow rate to assess muscle and sphincter function.

Treatment Options for Urinary Retention

Treatment depends on whether your retention is acute or chronic, its cause, and your overall health.

1. Immediate Relief: Catheterization

• Intermittent (straight) catheter
  • Inserted to drain urine, then removed. May be taught for home use several times per day.
• Indwelling (Foley) catheter
  • Left in place for continuous drainage for days or weeks.

Catheterization quickly relieves pain and prevents bladder damage.

2. Medications

• Alpha‐blockers (e.g., tamsulosin, terazosin)
  • Relax prostate and bladder neck muscles to improve urine flow.
• 5-alpha‐reductase inhibitors (e.g., finasteride, dutasteride)
  • Shrink an enlarged prostate over months.
• Cholinergic agents (less common)
  • Stimulate bladder muscle contractions in select neurological cases.

Your doctor will tailor drug choice based on cause, side effects and other health conditions.

3. Minimally Invasive Procedures

• Ureteral or prostatic stents
  • Small tubes keep the urethra or ureter open.
• Botulinum toxin (Botox) injections
  • Used in neurogenic bladder cases to reduce muscle overactivity around the urethra.
• Laser therapy or transurethral procedures
  • Vaporize or resect prostate tissue (e.g., GreenLight laser).

These options often have shorter recovery times than open surgery.

4. Surgery

When less invasive treatments aren't effective, surgery may be recommended:

• Transurethral resection of the prostate (TURP)
  • Removes prostate tissue blocking urine flow.
• Open or robotic prostatectomy
  • Removes part or all of the prostate for severe enlargement or cancer.
• Urethral stricture repair
  • Excises scar tissue or dilates narrow segments.
• Pelvic organ prolapse repair (in women)
  • Restores normal anatomy to relieve bladder outlet obstruction.

5. Pelvic Floor and Bladder Training

• Scheduled voiding
  • Regularly timed bathroom visits to prevent overstretching the bladder.
• Double voiding
  • Urinate, wait a few minutes, then try again to reduce residual urine.
• Pelvic floor muscle exercises
  • Strengthen sphincter control under supervision of a physical therapist.

At‐Home Management and Follow-Up

• Track your fluid intake and urination patterns.
• Avoid bladder irritants (caffeine, alcohol).
• Learn clean intermittent catheterization if prescribed.
• Attend follow‐up visits; repeat PVR measurements or imaging as directed.

When to Seek Urgent Care

Contact a doctor or go to the ER if you experience:

• Sudden inability to urinate with severe pain
• High fever, chills or back pain (signs of kidney infection)
• Blood in your urine or cloudy, foul‐smelling urine
• New or worsening neurological symptoms (numbness, weakness)

If you're experiencing any of these symptoms and want to better understand whether they may indicate urinary retention, a free AI-powered symptom checker can help you assess your situation and prepare informed questions before your doctor visit.

Speak to Your Doctor

While many treatments effectively manage urinary retention, it's important to discuss any worrisome symptoms or side effects with your healthcare provider. If you suspect urinary retention—especially with sudden, painful blockage—seek medical attention right away. Always speak to a doctor about anything that could be life threatening or serious.