Kidneys and urinary system · Updated 2026-09-20
Feline chronic kidney disease
A common progressive condition in older cats in which the kidneys gradually lose filtering and regulatory function.
Signs to watch for
- Drinking or urinating more
- Weight loss
- Reduced appetite
- Vomiting or nausea
- Poor coat quality
- Weakness
Causes and risk factors
Often no single cause is identified. Age, previous kidney injury, high blood pressure, infections, toxins and inherited disease can contribute.
How veterinarians diagnose it
Blood pressure, blood and urine tests are interpreted together; repeat testing helps distinguish chronic disease from dehydration or acute injury.
Treatment and management
Care may include a therapeutic kidney diet, hydration support, blood-pressure control and medicines for nausea, phosphorus or protein loss, tailored by a veterinarian.
Prevention
Routine senior checks, prompt treatment of urinary disease and avoiding nephrotoxic substances support earlier detection.
Outlook
Progression varies widely. Early staging and regular monitoring can preserve quality of life for months or years.