Signs and symptoms of urethral stricture include:  Decreased urine stream Incomplete bladder emptying Spraying of the urine stream Difficulty, straining or pain when urinating Increased urge to urinate or more-frequent urination Urinary tract infection  Causes Scar tissue, which can narrow the urethra, can be due to:  A medical procedure that involves inserting an instrument, such as an endoscope, into the urethra Intermittent or long-term use of a tube inserted through the urethra to drain the bladder (catheter) Trauma or injury to the urethra or pelvis An enlarged prostate or previous surgery to remove or reduce an enlarged prostate gland Cancer of the urethra or prostate Sexually transmitted infections Radiation therapy  Urethral stricture is much more common in males than in females. Often the cause is unknown. Clinical trials  Explore Mayo Clinic studies testing new treatments, interventions and tests as a means to prevent, detect, treat or manage this condition.       Explore Mayo Clinic studies             By Mayo Clinic Staff By Mayo Clinic Staff  Urethral stricture care at Mayo Clinic 
signs symptoms urethral stricture include:  decreased urine stream incomplete bladder emptying spraying urine stream difficulty  straining pain urinating increased urge urinate more-frequent urination urinary tract infection  causes scar tissue  can narrow urethra  can due to:  medical procedure involves inserting instrument  endoscope  urethra intermittent long-term tube inserted urethra drain bladder (catheter) trauma injury urethra pelvis enlarged prostate previous surgery remove reduce enlarged prostate gland cancer urethra prostate sexually transmitted infections radiation therapy  urethral stricture common males females  cause unknown  clinical trials  explore mayo clinic studies testing new treatments  interventions tests means prevent  detect  treat manage condition        explore mayo clinic studies             mayo clinic staff mayo clinic staff  urethral stricture care mayo clinic 
urethral stricture