Diabetes Mellitus (DM) is defined as a chronic metabolic disorder characterized by persistent high blood sugar (hyperglycemia) resulting from the body's inability to produce or properly utilize insulin. In cats, the condition is remarkably similar to Type 2 diabetes in humans, where the body becomes resistant to insulin or the pancreas eventually fails to secrete enough of it. For the owner of a cat with Chronic Kidney Disease (CKD), this diagnosis introduces significant complexity. Both diseases cause excessive thirst and urination (polyuria/polydipsia), making it difficult to monitor changes in health based on symptoms alone. The presence of excess sugar in the urine (glucosuria) acts as a potent diuretic. This pulls additional water from the body (osmotic diuresis) and drastically increases the risk of dehydration, which is dangerous for compromised kidneys. Furthermore, prolonged high blood sugar can lead to diabetic neuropathy, often visible as a "plantigrade stance" where the cat walks on its hocks instead of its paws. Uniquely, cats have the potential to achieve remission, where blood sugar normalizes without insulin, though this is harder to achieve when CKD limits the ability to use high-protein diets.
Disclaimer: This content is for educational purposes only and does not constitute veterinary medical advice. Always consult with your primary care veterinarian or a veterinary internal medicine specialist regarding your cat’s specific condition.