Inclusion Criteria:  Is at least 18 years of age; male or female. Is performing transurethral intermittent catheterization. Uses intermittent catheter(s) from any manufacturer as a form of management for urinary retention or incomplete bladder emptying. Must be able to provide informed consent and have no cognitive impairment that would hinder the ability to provide informed consent or self-reported data. Is willing and able to complete electronic questionnaires in their preferred language (English, German, French, Italian, or Dutch) monthly for the first year of data collection and quarterly thereafter or appoint a caregiver proxy.  Exclusion Criteria:  Performs non transurethral catheterization, e.g., stoma. Participating in a clinical study involving transurethral intermittent catheterization at the time of enrollment. Employee of Sponsor at the time of enrollment.