(This information is provided to help you learn about the disease and is not intended to take place of a Veterinarians recommendation.)
FUS is the clinical condition that occurs as a result of cystitis and/or urethritis (inflammation of the urethra). It is characterized by the frequent passing of often-times bloody urine, or partial to complete obstruction of the urinary tract.
SIGNS OF FELINE UROLOGIC SYNDROME
Because FUS is a very serious disease that can be fatal to a cat if left untreated, you need to be aware if any of its signs occur in your pet.
Most signs of FUS result from irritation of the urinary tract. Be suspicious if your cat shows prolonged squatting and straining when urinating, attempts to urinate more frequently than normal, urinates in unusual locations, has a painful abdomen if touched, or has bloody urine.
FUS can also cause your pet to lose its appetite, act sluggish, or begin vomiting, especially if urine flow is blocked.