A urethral stricture is a narrowing of the urethra caused by injury, instrumentation, infection and certain non-infectious forms of urethritis.
The hallmark sign of urethral stricture is a weak urinary stream. Other symptoms include:
Some patients with severe urethral strictures are completely unable to urinate. This is referred to as acute urinary retention and is a medical emergency. Hydronephrosis and renal failure may also occur.