Seek urgent medical care
Is the Bladder Blocked or Has There Been an Injury?
Arrange immediate assessment for:
- Complete inability to pass urine, especially with a painful, swollen lower abdomen or a strong urge to urinate.
- Fever, shaking chills, confusion, vomiting or marked weakness together with poor flow, retention or urinary infection symptoms.
- Blood at the urethral opening, inability to urinate or severe perineal bruising after a pelvic fracture or straddle injury.
- Severe pain, increasing genital swelling or heavy bleeding after catheterisation, cystoscopy, dilatation or urethral surgery.
A blocked, infected urinary tract can deteriorate quickly. The bladder may need careful drainage with a catheter passed under guidance or a suprapubic catheter placed through the lower abdomen.
After significant pelvic or straddle trauma, do not keep attempting to force a catheter through the urethra. Suspected urethral injury needs urgent trauma and urology assessment, often with a retrograde urethrogram.
What Exactly is a Urethral Stricture?
The urethra carries urine from the bladder to the outside. In men it travels through the prostate, pelvic floor, perineum and penis. Scarring of its lining and surrounding spongy tissue can contract, reducing the channel's diameter and resisting urine flow.
A Weak Stream is Not Always an Enlarged Prostate
Prostate enlargement, a urethral stricture, a tight bladder neck and a weak bladder muscle can all reduce flow. Age alone cannot identify the cause; the history, examination, flow pattern and targeted tests matter.
What Symptoms Can a Stricture Cause?
Other possible features include:
- Urinary frequency, urgency, burning or discomfort while passing urine.
- Repeated urinary infections or inflammation of the prostate or epididymis.
- Progressive difficulty inserting a catheter or a smaller stream over time.
- Reduced ejaculatory force or volume and discomfort during ejaculation.
- Blood in urine, blood at the meatus or occasionally blood in semen.
- Sudden or gradual urinary retention when the channel becomes critically narrow.
A mild stricture may cause few symptoms. Symptoms also do not measure length reliably: a short, dense narrowing may obstruct more than a longer, wider one.
Why Do Urethral Strictures Develop?
Questions Your Urologist May Ask
When did the stream begin to change?
Gradual progression, sudden retention or symptoms after a specific procedure or injury can point to different locations, causes and degrees of urgency.
Have you had catheters, prostate treatment or pelvic radiotherapy?
Bring procedure records when available. The type and date of previous instruments, operations, endoscopic treatment and reconstruction affect the next investigation.
Has the narrowing already been dilated or cut?
The number, timing and durability of previous dilatations or urethrotomies matter. Repeated short-lived improvement usually changes the balance towards reconstruction.
Are there genital skin changes?
White patches, tight foreskin, fissuring, itching or a narrowing meatus may indicate lichen sclerosus and influence graft choice and long-term follow-up.
How are urination and sexual function affected?
Post-void dribbling, infections, retention, ejaculation changes, erections and the effect on work and daily life should all be discussed before selecting treatment.
How is a Urethral Stricture Investigated?
Examination checks the lower abdomen, penis, meatus, foreskin, genital skin, perineum and old scars. Urinalysis and culture identify infection; kidney-function blood tests are added when retention or upper-tract effects are possible.
You urinate into a flow meter. A low, prolonged plateau pattern can suggest a fixed narrowing. An ultrasound then measures urine left in the bladder, but neither test alone can prove where the obstruction lies.
Contrast is introduced gently at the urethral opening while X-rays map the site, number and approximate length of narrowing. It is particularly useful before reconstructive surgery.
Images taken while contrast leaves the bladder show the urethra above a very tight or obliterated segment. RGU and VCUG are often combined for pelvic-fracture injuries and complex posterior narrowing.
A small telescope confirms narrowing and checks nearby urethra and bladder, although it may not measure length. Urethral ultrasound or MRI is reserved for selected anterior, posterior, traumatic, fistula or reconstruction questions.
Could the Problem Be the Prostate or Bladder Instead?
Yes. Benign prostate enlargement, bladder-neck obstruction, stones, medicines, nerve disease and an underactive bladder can mimic a stricture. Some patients have more than one problem, especially after long-standing obstruction.
Pressure-flow urodynamics is not routinely needed for a straightforward stricture, but it can be helpful when severe storage symptoms, neurological disease, radiotherapy or weak bladder muscle may influence the outcome of surgery.
Does Every Stricture Need an Operation?
A wide, stable stricture causing minimal symptoms and no infection, retention, bladder or kidney harm may sometimes be observed. Monitoring usually includes symptoms, flow and residual urine. Any deterioration prompts reassessment.
Treatment becomes more important when symptoms are troublesome, infections recur, emptying is unsafe, a catheter cannot pass or the narrowing is progressing. The aim is safe, durable flow—not simply making one flow-test number look better.
What Are the Main Treatment Options?
Why Not Keep Repeating Dilatation or DVIU?
Endoscopic treatment is less invasive and can be appropriate for a carefully selected first stricture or a short, thin recurrence. It rarely removes the biological tendency of scar tissue to contract, however, so benefit may be temporary.
When a stricture returns after dilatation or DVIU, repeated procedures generally become less durable. Repeated manipulation can also lengthen or complicate the scar and delay definitive repair. If urethroplasty is a realistic option, current guidance recommends discussing it rather than defaulting to repeated endoscopic treatment.
Ask What “Success” Means for Each Option
A procedure that restores flow for months is different from one intended to provide long-term patency. Ask about the expected recurrence risk for your exact stricture, likely catheter time, recovery, sexual effects and what would happen if treatment failed.
How is Urethroplasty Chosen?
Location, length, obliteration, scar quality, continence mechanism, previous treatment, radiation, lichen sclerosus, general health and patient preference all influence the plan. Complex disease may merit referral to a surgeon who regularly performs urethral reconstruction.
What is Different When Lichen Sclerosus is Present?
Lichen sclerosus can affect the foreskin, glans, meatus and penile urethra. It may cause pale or white skin, tightening, cracking, bleeding and progressive narrowing. Treating active skin disease and avoiding repeated local trauma are part of stricture care.
Genital skin affected by lichen sclerosus is generally unsuitable for urethral substitution. Buccal mucosa is often considered when graft reconstruction is required. Long-term review matters because both skin disease and narrowing can recur, and suspicious persistent ulcers or lumps need prompt examination.
What Should You Expect After Treatment?
- A urethral or suprapubic catheter may remain for days after endoscopic treatment and longer after reconstruction; the exact period depends on the operation and healing.
- Some patients have an RGU or VCUG before catheter removal to confirm that the repair is sealed.
- Mild burning, urgency or a small amount of blood can occur early, but fever, blocked drainage, worsening pain, heavy bleeding or increasing swelling requires advice.
- Follow the surgeon's restrictions on driving, lifting, work, cycling, straddling and sexual activity.
- Follow-up may combine symptom questions, patient-reported outcomes, uroflowmetry, residual urine, cystoscopy or imaging according to recurrence risk.
Tell the team if the stream begins to slow, spray or split again. Early recurrence may be easier to assess and, in selected situations, easier to manage than a dense established narrowing.
Myth vs Fact
Frequently Asked Questions
What happens during an RGU or retrograde urethrogram?
A clinician gently seals or holds the urethral opening, introduces X-ray contrast and takes images as it outlines the channel. The test may feel uncomfortable briefly and is used to map the location and length of a narrowing before treatment.
Are RGU, VCUG and MCU the same test?
They are related but show the urethra in different directions. RGU introduces contrast from the urethral opening. VCUG—often called MCU—images contrast leaving the bladder during urination. Combining them can show both sides of a very tight or obliterated segment.
Can medicine cure a urethral stricture?
Medicine can treat an associated infection or active skin inflammation but does not usually remove established urethral scar tissue. Observation or a procedure is chosen according to symptoms, safety and the anatomy of the narrowing.
Is self-catheterisation a permanent cure?
Intermittent self-dilatation can keep a treated narrowing open or delay recurrence, but it usually controls rather than cures the scar. It should be taught carefully with a schedule, catheter choice and plan for bleeding, pain, infection or inability to pass the catheter.
Will urethroplasty affect erections or ejaculation?
Many patients retain or improve sexual function when obstruction is relieved, but temporary or persistent erection, ejaculation, penile sensation or curvature changes are possible. Risk varies with location, trauma, previous treatment and surgical approach and should be discussed.
Is a urethral stricture cancer?
A typical stricture is benign scar tissue, not cancer. Unexplained bleeding, a persistent mass, discharge, fistula or suspicious genital lesion still requires investigation because rare urethral or skin cancers can produce overlapping symptoms.