Liver Disease in Cats
Liver disease in cats can be subtle at first, and cats often hide illness until they are quite sick. Early recognition of appetite changes, weight loss, or jaundice can make a major difference in diagnosis and treatment.
Don’t wait on jaundice or a cat that stops eating
Liver disease in cats ranges from chronic inflammation to life-threatening fatty liver syndrome. Because cats often mask illness, signs like yellow gums or eyes, vomiting, lethargy, or not eating for more than a day deserve prompt veterinary attention. Seek emergency care if your cat is weak, collapses, has neurologic signs, trouble breathing, a swollen belly, or has gone several days with little to no food.
Symptoms to Watch For
Poor appetite or not eating
A drop in appetite is one of the most important early warning signs in cats and can quickly lead to hepatic lipidosis.
Weight loss
Gradual or sudden weight loss is common with chronic liver disease, cholangitis, and fatty liver.
Yellow eyes, gums, or ears
Jaundice (icterus) is a classic red flag that needs veterinary assessment right away.
Vomiting or nausea
Cats with liver disease may vomit, drool, lip-smack, or seem uninterested in food.
Lethargy or hiding
Many cats become quieter, less interactive, or spend more time hiding when they feel unwell.
Behavior changes
Confusion, staring, stumbling, or other neurologic signs can happen in severe liver dysfunction and are an emergency.
What Causes Liver Disease
Liver disease is a broad term that includes several different problems in cats. Common causes include hepatic lipidosis (fatty liver), inflammatory liver and bile duct disease such as cholangitis or cholangiohepatitis, infections, toxins, cancer, gallbladder or bile duct obstruction, and vascular problems such as portosystemic shunts. Cornell notes that cholangiohepatitis is one of the most common causes of feline liver disease, while hepatic lipidosis is one of the most frequently diagnosed and can be fatal if not treated promptly. Many cats develop liver disease secondary to another illness, especially after a period of poor appetite.
- Obesity and a period of not eating increase risk for hepatic lipidosis
- Pancreatitis and inflammatory bowel disease commonly occur alongside feline biliary and liver disease (sometimes called triaditis)
- Bacterial infection can contribute to neutrophilic cholangitis
- Immune-mediated inflammation can contribute to lymphocytic cholangitis
- Underlying diseases such as diabetes, hyperthyroidism, kidney disease, or cancer may trigger secondary liver problems
- Persian cats may have a genetic predisposition to lymphocytic cholangiohepatitis
- Free-roaming cats in tropical or subtropical regions may be at risk for liver fluke infection
- Some toxins or drug reactions can damage the liver
How It's Diagnosed
Diagnosis usually starts with a physical exam and bloodwork to look for elevated liver enzymes, bilirubin changes, and other clues. Your veterinarian may also recommend urinalysis, clotting tests, abdominal ultrasound, and in some cases bile sampling or a liver aspirate/biopsy. Imaging helps assess the liver, gallbladder, bile ducts, and nearby organs such as the pancreas and intestines. A biopsy may be needed to confirm the exact type of liver disease and guide treatment, but sometimes vets make a presumptive diagnosis based on history, exam findings, lab work, and ultrasound.
- Blood chemistry and complete blood count
- Bilirubin testing and urinalysis
- Clotting tests before sampling procedures
- Abdominal ultrasound to look for inflammation, obstruction, masses, or concurrent pancreatitis
- Fine needle aspirate or biopsy in selected cases
- Additional testing for infections, endocrine disease, or other underlying causes
Treatment Options
Treatment depends on the cause, severity, and whether your cat is still eating. Supportive care often includes fluids, anti-nausea medications, nutrition support, and treatment of the underlying disease. Cats with hepatic lipidosis commonly need aggressive nutritional support, sometimes through a feeding tube, because ongoing poor intake can make the condition much worse. Cats with cholangitis may need antibiotics, and some inflammatory forms are treated with immunosuppressive medication under veterinary supervision. Surgery may be needed if there is bile duct obstruction or gallbladder disease. Ongoing monitoring is often important, especially for chronic or relapsing liver conditions.
- Hospitalization for sicker cats
- Nutrition support, including feeding tube support when needed
- Anti-nausea and supportive medications prescribed by a veterinarian
- Treatment of the underlying problem, such as pancreatitis, infection, inflammatory bowel disease, or endocrine disease
- Antibiotics for confirmed or suspected bacterial cholangitis
- Immunosuppressive therapy for some inflammatory liver diseases
- Follow-up bloodwork and recheck imaging to monitor response
Living with Liver Disease
Frequently Asked Questions
Is liver disease in cats an emergency?
What is the most common liver disease in cats?
Can a cat recover from liver disease?
Why is not eating so dangerous for cats with liver disease?
Are some cats more at risk?
How much does diagnosis and treatment cost?
Disclaimer: The information provided in this article is for educational purposes only and does not constitute veterinary medical advice. Reading this content does not establish a veterinarian-client-patient relationship. Every pet is different — always consult a licensed veterinarian before making decisions about your pet's health, diet, or care. If you'd like personalized guidance, you can talk to one of our vets. If your pet is experiencing a medical emergency, contact your local emergency animal hospital immediately.