If you are experiencing an elimination problem with your cat, it could be caused by a medical problem such as urethral blockage, bladder infection, cystitis or a kidney problem.
As much as 51 percent of all hemorrhagic cystitis (inflammation of the bladder and of the tubes that carry urine to the bladder from the kidneys) in American and Japanese children can be attributed to adenovirus infection.
Drinking unsweetened cranberry juice not only adds fluid but also is thought to help prevent cystitis by making it more difficult for bacteria to cling to the bladder wall.
When cystitis is suspected, the doctor first examines a person's abdomen and lower back, to evaluate unusual enlargements of the kidneys or swelling of the bladder.
If your feline friend stops using the litter box, there may be a medical problem such as a bladder infection, a urethral blockage, cystitis or a kidney problem.