Cats with obstructions from FUS cannot pass their urine because of sand or mucous plugs in the urinary canal, generally near the end of the penis. If the obstruction is not relieved promptly. affected cats rapidly become very sick and die. Early signs of trouble are:
- Irritability and restlessness
- Blood in the urine
- Frequent trips to the litter box
- Straining while in a squatting position (often mistaken for constipation)
- Urinating inappropriately in unusual places in the house
ANY ONE OF THESE SIGNS SHOULD ALERT YOU TO THE POSSIBILITY OF FUS. Isolate the cat and give it only a small amount of litter so that you can tell how small amounts frequently or not at all.
Cats with more advanced disease may emit deep cries of pain, strain constantly, have an enlarged tender abdomen and vomit and drool. They eventually become extremely depressed and die.
The presence of obstruction from FUS is an EMERGENCY SITUATION and prompt treatment is essential. Treatment is directed at relieving obstruction and controlling pain and spasm. With early treatment, most FUS patients respond well; however, recurrence within a few hours to a few months is possible. Dietary changes can usually control the disease, but some cats eventually require surgery to enlarge the urethral opening. This usually prevents life threatening obstruction, but straining and passing blood may still occur.