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Fatty Liver Disease in Cats: Not Eating Can Quickly Kill

Posted January 28, 2014 in Cat Diseases & Conditions A-Z

If your cat was just diagnosed with hepatic lipidosis, fear not! While it sounds scary, hepatic lipidosis simply means that there is inappropriate fat infiltration into the liver. Often known by the laymen’s term “fatty liver,” this disease occurs when cats — especially obese cats — go without food for a few days. Untreated, hepatic lipidosis can result in liver failure and death, so it must be aggressively treated by your veterinarian. Thankfully, the prognosis can be excellent with intravenous (IV) fluids, proper nutritional supplementation, and supportive care, but keep in mind that it can be extremely costly to treat.

Causes of fatty liver disease in cats

So, why do cats develop hepatic lipidosis? Unfortunately, as an emergency critical care specialist, the main reasons why I see it in the ER include the following:

  • Introduction of a new diet without appropriate slow weaning or acclimatization. You should never force your cat to go “cold turkey” and change your cat’s diet acutely. As we all know cats don’t tolerate sudden change well, and diet changes should always be transitioned slowly over several days to weeks. [Editor’s note: Always speak to your veterinarian before changing your cat’s diet]
  • Introduction of a new pet (e.g., dogs or cats) which causes environmental stress and may result in your cat’s sudden loss of appetite
  • Introduction of two-legged newborns (i.e., human babies) causing environmental stress
  • Stressful situations (e.g., visiting guests who live in your house for a few days, scaring your cat away)

Symptoms of fatty liver disease in cats

Signs of hepatic lipidosis can be really subtle, so it’s important to watch for clinical signs of the following:

  • Decreased appetite or complete inappetance (i.e., anorexia)
  • Hiding in unusual places (e.g., closet)
  • Weakness or lethargy
  • Icterus/jaundice (a yellow tinged color to the gums or skin, best seen on the ears and eyes)
  • Drooling (often a sign of nausea)
  • Vomiting
  • Dehydration
  • Small fecal clumps in the litter box (due to lack of eating)
  • Constipation
  • Collapse
  • Weight loss
  • Muscle wasting
  • A weakened neck (the head hangs down more than usual with a chin tuck)

When untreated or in severe cases — signs of liver failure can include the following:

  • Black tarry stool
  • Bruising (abnormal clotting)
  • Coma (from the liver poisons building up in the body)
  • Abnormal behavior progressing to seizures
  • Death

How do we diagnose and treat fatty liver disease in cats?

The diagnosis of hepatic lipidosis is

Related symptoms: 

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Justine has more than 18 years of experience in the veterinary industry and is a board-certified emergency critical care veterinary specialist and toxicologist as well as the CEO and founder of Vetgirl. She is also a founding member of IDEXX’s Pet Health Network team.