It can be deduced from statistics, that injuries are causative for a urethral stricture in the majority of cases. Already very small injuries can lead to scarring, which in turn leads to a stricture. Those microscopically small injuries can happen in consequence of a bladder examination, for instance, or they can emerge during positioning a urinary catheter.
Another unpleasant complication of urethral strictures is the formation of scars on parts of the cavernous body of the penis, the so called corpus spongiosum. If this remains untreated for a longer period, it can lead to complete scarring of the cavernous body which is called spongiofibrosis and entails erectile dysfunction of the penis. This implies that quick action is required and it is important not to wait too long until seeking medical attention. The doctor can minimize the risk of complications for the patient with the appropriate treatment.