Last reviewed: July 15, 2026. This article is for general information and does not replace advice from your doctor, pharmacist, urologist, gynecologist or another licensed clinician.
Editorial review and sources
Editorial review: osvilt.com Editorial Team
Last reviewed: July 15, 2026
This medical article is based on current public medical sources and follows the osvilt.com Medical Review Policy. It is for general information only and does not replace professional care; see our Medical Disclaimer.
Ischuria means urinary retention: the bladder cannot empty completely or cannot empty at all. It may be acute, with sudden painful inability to pass urine, or chronic, with gradual incomplete emptying, weak stream, frequent urination or leakage.
Short answer: Acute urinary retention is urgent and usually needs prompt bladder drainage. Chronic urinary retention is less dramatic but still needs assessment because long-term retained urine can contribute to infections, bladder problems and kidney damage.
What changed in this update
The article was updated to make the emergency signs clearer and to separate acute retention from chronic retention. The term ischuria is less common in patient-facing English; urinary retention is the term most clinicians and health systems use.
Acute vs chronic urinary retention
| Type | Typical symptoms | What to do |
|---|---|---|
| Acute urinary retention | Sudden inability to urinate, strong urge, lower abdominal pain or swelling. | Seek urgent medical care. A catheter may be needed to drain the bladder. |
| Chronic urinary retention | Weak or interrupted stream, hesitancy, feeling not empty, frequent urination, nighttime urination, leakage or recurrent UTIs. | Book clinician/urologist review. Testing often includes urinalysis and post-void residual measurement. |
Common causes
- Blockage: enlarged prostate, urethral stricture, stones, pelvic organ prolapse, tumors or severe constipation.
- Nerve problems: diabetes, spinal cord disease/injury, multiple sclerosis, stroke or surgery-related nerve injury.
- Medicines: some antihistamines, decongestants, antidepressants, anticholinergics, opioids and other drugs can contribute.
- Infection or inflammation: prostatitis, severe UTI or urethral inflammation.
Diagnosis and treatment
Clinicians may examine the abdomen and genitals/pelvis, check urine, measure how much urine remains after voiding, and order imaging or urodynamic tests when needed. Treatment depends on the cause and may include catheter drainage, changing a medicine, treating infection, prostate medicines, procedures for obstruction or intermittent self-catheterization.
When to ask a clinician first
Get individual medical advice before starting, stopping or switching medicines, contraceptives or supplements, and before treating urinary symptoms at home. Seek urgent care for severe pain, inability to urinate, fever, flank pain, blood in urine, pregnancy-related symptoms, chest pain, shortness of breath, one-sided leg swelling, fainting, or any rapidly worsening condition.
FAQ
Is ischuria the same as urinary retention?
Yes. Ischuria is an older/technical term; urinary retention is the common term.
Can urinary retention go away by itself?
Sometimes mild medication-related or temporary retention improves, but acute inability to urinate should not be watched at home.
Why is acute retention urgent?
A painfully overfilled bladder can require prompt drainage and the cause needs assessment.
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