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Overview
What Is Urinary Retention?
Urinary retention means you cannot empty your bladder fully or cannot urinate at all. It may happen suddenly, which is called acute urinary retention, or develop gradually over time as chronic retention. Some people have clear difficulty urinating, while others have few noticeable symptoms. Urine retention can affect people of any sex or age, although the causes and risk factors vary.
Symptoms
Urinary Retention Symptoms
- Difficulty starting urination (urinary hesitancy).
- A weak or slow urine stream.
- Passing frequent, small amounts of urine.
- Straining to urinate.
- A feeling that the bladder has not emptied.
- Lower abdominal discomfort or swelling.
- Inability to urinate.
SEEK PROMPT CARE
Sudden symptoms need attention
Chronic urinary retention can cause mild or nonspecific symptoms that are easy to overlook. Inability to urinate, severe lower abdominal pain, or marked bladder swelling needs urgent medical care.
Causes
Causes of Urinary Retention
Urinary retention develops when urine flow is blocked, the bladder cannot contract effectively, or the nerves that coordinate urination are impaired. Infection, inflammation, medicines, and temporary effects after a procedure can also interfere with normal emptying. These mechanisms can lead to urine retention and urinary stasis inside the bladder.
| Cause group | Examples | How it affects urination |
|---|---|---|
| Blockage | Enlarged prostate, urethral narrowing, stones, or a mass | Narrows or blocks the pathway through which urine leaves the bladder. |
| Bladder or nerve dysfunction | Weak bladder muscle, spinal cord disease, or nerve damage | Prevents the bladder from contracting or coordinating emptying normally. |
| Infection or inflammation | Urinary tract infection, prostatitis, or irritation | Causes swelling, pain, or altered bladder function that can restrict flow. |
| Medication effects | Some antihistamines, decongestants, antidepressants, or pain medicines | May weaken bladder contractions or tighten the outlet. |
| Surgery or anesthesia | Temporary effects after pelvic surgery or anesthesia | Can briefly reduce bladder sensation or muscle activity. |
Risk Factors
Risk Factors for Urinary Retention
- An enlarged prostate or another blockage in the pelvis.
- Older age.
- A previous episode of urinary retention.
- Urinary tract or prostate conditions.
- Neurologic disease affecting bladder control.
- Diabetes, which can affect bladder nerves.
- Constipation.
- Pelvic surgery or anesthesia.
- Medicines that can impair bladder emptying.
Some risk factors can be addressed, such as reviewing medicines with a clinician and managing constipation. Others, including age, previous surgery, and neurologic disease, cannot be changed. If you develop urinary hesitancy or other new urinary symptoms, early evaluation may help lower the risk of acute urinary retention.
Complications
Complications of Urinary Retention
- A urinary tract infection can develop when urine remains in the bladder.
- The bladder muscle may become overstretched or damaged.
- Bladder stones may form in retained urine.
- Overflow leakage may occur when an overfilled bladder leaks small amounts.
- Severe or prolonged retention can damage kidney function.
- Retention may recur if the underlying cause is not treated.
WHY TREATMENT MATTERS
Untreated retention can damage the urinary tract
The risk of complications depends on how severe and long-lasting the retention is. Prompt treatment can help prevent urinary tract infections, bladder injury, urinary stasis, and kidney complications.
Diagnosis
How Urinary Retention Is Diagnosed
Clinicians ask about your symptoms, when they began, medical history, medicines, bowel habits, and recent procedures. They may examine the abdomen and perform other relevant physical examinations. This information helps determine whether symptoms suggest urinary retention and what may be causing it.
- A bladder scan or post-void residual measurement checks how much urine remains after you try to urinate.
- A urinalysis looks for infection, blood, or other signs of urinary tract problems.
- Blood tests can assess kidney function and identify related concerns.
- Imaging, such as an ultrasound, may look for blockage, stones, or other structural problems.
- Specialized bladder or nerve tests may be used when the cause is unclear or symptoms persist.
Treatment & Management
Urinary Retention Treatment and Management
Acute urinary retention is usually treated first by draining the bladder, often with a catheter for urinary retention. Clinicians then evaluate and treat the underlying cause. The best urinary retention treatment depends on whether the problem involves blockage, infection, medicines, bladder weakness, or nerve dysfunction.
| Approach | When it may be used | Key considerations |
|---|---|---|
| Catheter drainage | When the bladder is overfull or urine cannot pass | Provides immediate relief; the catheter plan should be followed carefully to reduce complications. |
| Medication changes or medicines | When a medicine contributes to retention or treatment can improve the underlying condition | Do not stop prescribed medicines without medical advice. |
| Treatment of infection or constipation | When inflammation, infection, or bowel blockage affects emptying | Treating the contributing problem may improve bladder function. |
| Procedure to relieve blockage | When an enlarged prostate, narrowing, stone, or mass obstructs urine flow | The procedure depends on the location and cause of the blockage. |
| Intermittent or long-term catheterization | When bladder emptying remains impaired or retention is chronic | A clinician teaches safe bladder care and reviews the need over time. |
Prevention
Can Urinary Retention Be Prevented?
- Ask a clinician to review medicines that may affect urination.
- Manage constipation with appropriate fluids, diet, activity, and medical advice.
- Have urinary hesitancy or other new urinary symptoms assessed early.
- Follow care plans for prostate or neurologic conditions.
- Ask about the risk of retention after catheter use or surgery.
Not all cases of urinary retention can be prevented, particularly when nerve disease, age-related changes, or an unavoidable procedure is involved. People with recurring symptoms should work with a clinician to identify the cause and reduce the risk of repeated retention and urinary stasis.
Outlook and Prognosis
Outlook and Prognosis
Many people improve when the cause of urinary retention is found and treated. Others may need ongoing monitoring, intermittent catheterization, or long-term management if bladder muscle or nerve function remains impaired. Acute episodes may resolve more quickly than chronic retention, but follow-up is important when symptoms recur.
- How quickly the retention is treated can affect recovery and complication risk.
- The underlying cause influences whether the problem is temporary, treatable, or likely to recur.
- Kidney function helps indicate whether retention has affected the upper urinary tract.
- Bladder muscle and nerve health influence the ability to empty without assistance.
- Repeated episodes may require longer-term monitoring and a prevention plan.
When Should You See a Doctor
When Should You See a Doctor for Urinary Retention?
GET URGENT HELP
Do not wait if you cannot urinate
Inability to urinate, especially with lower abdominal pain, swelling, nausea, or distress, requires immediate medical care. It may be acute urinary retention and should not be managed at home.
- Worsening difficulty starting urination or urinary hesitancy should be assessed promptly.
- A progressively weak urine stream warrants medical evaluation.
- Frequent urination in small amounts may indicate incomplete emptying.
- A persistent feeling that the bladder has not emptied should be checked.
- Blood in the urine requires medical assessment.
- Fever with urinary symptoms may indicate an infection.
- Painful urination should be evaluated, particularly if it persists.
- Repeated episodes of retention need assessment of the underlying cause.
If you have a catheter, seek prompt help for blockage, no urine draining, new severe pain, fever, or a catheter that has come out and cannot be replaced. Do not force the catheter or attempt complex bladder care without instructions from your care team.
Branches
1 topic
Urinary Retention
Urology
