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Diabetic Cat Not Eating: Emergency Causes and Immediate Actions

A diabetic cat refusing food is a medical emergency. Anorexia precipitates diabetic ketoacidosis (DKA) rapidly.

Top Causes of Anorexia in Diabetic Cats

  1. DKA: Nausea/vomiting from ketonemia, acidosis. Vicious cycle: no food → more ketones.
  2. Hypoglycemia: Insulin overdose, missed meal after injection → weakness, seizures, coma.
  3. Concurrent illness: Pancreatitis (common in diabetic cats), cholangitis, IBD, renal disease, UTI, dental pain.
  4. Insulin resistance: Infection, obesity, acromegaly, hyperadrenocorticism → poor control → malaise.
  5. Medication side effects: Some insulin types cause injection site pain.

    6. Immediate Steps

    1. Check blood glucose (BG) at home if glucometer available.
    2. If BG <60 mg/dL: Offer food, honey/Karo syrup on gums, rush to vet.
    3. If BG >250 mg/dL + ketones (urine strip): DKA likely. ER immediately.
    4. If BG normal but not eating >12-24h: Vet same day.

    Veterinary Management

    • IV fluids, electrolyte correction, insulin drip (DKA).
    • Antiemetics (maropitant, ondansetron).
    • Appetite stimulants (mirtazapine, capromorelin).
    • Treat underlying cause (pancreatitis, infection).
    • Adjust insulin protocol.

    Prevention

    • Consistent feeding times with insulin.
    • Palatable diet (low carb, high protein).
    • Home BG monitoring (ear/pad prick).
    • Regular vet rechecks (fructosamine, CBC, chem).

    Never skip insulin without vet guidance. Anorexia + insulin = life-threatening hypoglycemia or DKA.

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