Feline lower urinary tract disease (previously called feline urologic syndrome) does not refer to a specific disease, but rather to a grouping of problems that are associated with the lower urinary tract in cats. Both males and females are affected.

Some of the problems that may be included in feline lower urinary tract disease include:

• idiopathic cystitis

• sterile cystitis

• formation of urinary stones

• obstruction of the urethra

• tumors, and

• bacterial infections

Because these disorders may occur separately, their causes, signs, and treatment are discussed separately in this chapter, rather than grouped under feline lower urinary tract disease.