FLUTD is a common disease in adult cats, affecting from 0.5% to 1% of the population. FLUTD affects cats of both sexes, but tends to be more dangerous in males because they are more susceptible to blockages due to their longer, narrower urethrae. Urinary tract disorders have a high rate of recurrence, and some cats seem to be more susceptible to urinary problems than others. The older term, Feline urologic syndrome (FUS) was renamed to discourage the perception that the clinical signs seen represent one disease with one cause