Pancreatitis in cats is one of the most underdiagnosed conditions in feline medicine — not because it is rare, but because the clinical signs are subtle, the diagnostic tests are imperfect, and the condition almost always overlaps with other diseases. A 2007 UC Davis necropsy study (De Cock et al.) found histopathological evidence of pancreatitis in 67% of cats overall, including 45% of apparently healthy cats — suggesting that subclinical pancreatic inflammation is far more prevalent than clinical diagnosis rates would indicate.

The 2021 ACVIM consensus statement on feline pancreatitis, authored by eight specialists including clinical and anatomical pathologists, confirmed that antemortem diagnosis remains challenging — especially for chronic cases — and that treatment is largely supportive. This guide covers what cat owners and veterinary teams need to know about recognizing, diagnosing, and managing feline pancreatitis.

What pancreatitis is — and why cats are different from dogs

The pancreas has two functional compartments: the exocrine pancreas (which produces digestive enzymes) and the endocrine pancreas (which produces insulin and glucagon). Pancreatitis is inflammation of the exocrine pancreas. In severe cases, digestive enzymes become activated within the pancreatic tissue itself, causing autodigestion and inflammation that can cascade into systemic illness.

Cats differ from dogs in several critical ways:

• Clinical signs are nonspecific. Dogs with pancreatitis typically present with vomiting, abdominal pain, and a hunched posture. Cats more commonly show lethargy, decreased appetite, and hiding — signs shared with dozens of other conditions.
• Vomiting is less consistent. Aggregated data from multiple studies show vomiting in approximately 43% of cats with pancreatitis, compared with a much higher rate in dogs. A cat that is not vomiting can still have significant pancreatic inflammation.
• Abdominal pain is underrecognized. Studies report abdominal pain in only 25–52% of cats with pancreatitis, though this may reflect the difficulty of assessing pain in cats rather than its true absence.
• Concurrent disease is the rule, not the exception. Up to 50–56% of cats with pancreatitis also have inflammatory bowel disease (IBD), and 32–50% have concurrent liver disease (cholangitis or cholangiohepatitis). This triad of pancreatic, intestinal, and hepatic inflammation is called triaditis and significantly complicates both diagnosis and treatment.

Acute vs chronic pancreatitis

Pancreatitis is classified as acute or chronic based on histopathology, not duration of clinical signs. The ACVIM consensus emphasizes that this distinction cannot be reliably made clinically.

Acute-on-chronic (chronic-active) pancreatitis is also recognized histologically and may be the most common presentation in clinical practice.

Signs cat owners should watch for

The most common clinical signs, aggregated across multiple studies, are:

Key point: a cat that has simply stopped eating and is hiding under the bed may have pancreatitis. These signs are not specific to pancreatitis — they overlap with kidney disease, liver disease, IBD, and many other conditions — which is why diagnostic testing is essential.

Diagnosis: no single test is sufficient

The ACVIM consensus statement and the Merck Veterinary Manual both emphasize that feline pancreatitis cannot be diagnosed by any single test. Diagnosis requires integration of clinical signs, laboratory data, and imaging.

Blood work

The most important takeaway for cat owners: Spec fPL is the best available blood test, but it misses a significant proportion of cases. A cat with a normal Spec fPL and compatible clinical signs still needs further evaluation.

Abdominal ultrasound

Abdominal ultrasound can identify pancreatic enlargement, changes in pancreatic echogenicity, free peritoneal fluid, and hyperechoic peripancreatic fat. However, the reported sensitivity is 11–67% depending on the operator, equipment, and patient. A normal ultrasound does not rule out pancreatitis.

Ultrasound is most valuable for:

• Identifying concurrent disease (hepatic lipidosis, cholangitis, IBD-associated thickened intestinal loops)
• Guiding fine-needle aspirates of the pancreas or liver
• Ruling out other causes of the cat's clinical signs (masses, obstruction, organomegaly)

Histopathology and biopsy

Histopathology is the gold standard for definitive diagnosis but is rarely performed antemortem in cats. Pancreatic biopsy requires laparotomy or laparoscopy and is typically pursued only when conservative management fails or when cancer is suspected. Pancreatitis can be multifocal and focally severe, meaning a biopsy from one area of the pancreas may miss disease in another.

What "triaditis" means for diagnosis

When a cat is diagnosed with pancreatitis, the veterinarian should also evaluate for concurrent IBD and liver disease. The workup often includes:

• Spec fPL
• Abdominal ultrasound (assessing pancreas, liver, gallbladder, and intestines)
• Liver enzyme panel (ALT, ALP, GGT, bilirubin)
• Cobalamin (vitamin B12) and folate levels (to assess intestinal absorption)
• FIV/FeLV testing if not previously done
• Thyroid panel (hyperthyroidism can complicate the clinical picture in older cats)

Treatment: supportive care, not targeted therapy

There is no specific treatment for feline pancreatitis. The ACVIM consensus and multiple clinical reviews confirm that successful management centers on four pillars: fluid therapy, nutritional support, pain control, and treatment of concurrent conditions.

Inpatient management (moderate to severe cases)

Cats with acute disease, systemic signs (fever, tachypnea, tachycardia), or circulatory shock should be hospitalized. Inpatient care includes:

• Intravenous fluid therapy to maintain perfusion, correct dehydration, and prevent hypovolemic shock. Electrolyte abnormalities (particularly hypokalemia and hypocalcemia) should be corrected.
• Analgesia — pain control is essential even if the cat does not appear painful. Opioids (buprenorphine, hydromorphone) are commonly used. Constant-rate infusions may be needed for severe cases.
• Antiemetic therapy — maropitant (Cerenia) or ondansetron to control nausea and vomiting, even if vomiting is not a primary sign.
• Nutritional support — the ACVIM consensus explicitly states that withholding food is not recommended in cats with pancreatitis. Enteral nutrition should be initiated early. Cats that have been inappetent are at risk for hepatic lipidosis (fatty liver syndrome), which can develop after as few as 48–72 hours of anorexia. Feeding tubes (esophagostomy or nasogastric) may be placed if the cat will not eat voluntarily.
• Monitoring — body weight, respiratory rate, PCV, electrolytes, calcium, BUN, creatinine, blood pressure, and urine output should be assessed daily in severe cases. Blood glucose should be monitored, especially if IV nutrition is used.

Outpatient management (mild chronic cases)

Cats with mild chronic pancreatitis or cats that have stabilized after hospitalization may be managed as outpatients with:

• Appetite stimulants — mirtazapine (Mirataz, topical) or capromorebate (Elura, oral) to encourage eating
• Antiemetics — maropitant or ondansetron as needed
• Analgesia — buprenorphine or gabapentin if pain is suspected
• Dietary management — a highly digestible diet; hypoallergenic or novel-protein diets may be tried if concurrent IBD is suspected. Unlike in dogs, dietary fat restriction is not as clearly beneficial in cats, though some veterinarians recommend moderate-fat diets.
• Probiotics — sometimes recommended to support gastrointestinal health, though evidence is limited
• Treatment of concurrent conditions — this is critical. Managing IBD (with diet or immunosuppressive therapy), cholangitis (with antibiotics or immunosuppressants), or diabetes (with insulin or oral hypoglycemics) often improves the pancreatitis as well.

What about steroids?

Corticosteroids (prednisolone, budesonide) are commonly used to treat concurrent IBD in cats with triaditis. The ACVIM consensus notes that steroids are not directly indicated for pancreatitis itself, and in acute severe cases they may carry risk. However, in cats with chronic lymphoplasmacytic pancreatitis and concurrent IBD, steroids may be used as part of a broader treatment plan. The decision should be made by the attending veterinarian based on the full clinical picture.

Long-term monitoring and prognosis

The prognosis for feline pancreatitis depends on severity and the presence of concurrent disease:

• Mild to moderate acute pancreatitis: Many cats recover fully with prompt treatment. Prognosis is generally good.
• Severe acute pancreatitis with systemic complications (DIC, multiorgan failure): Prognosis is guarded to poor.
• Chronic pancreatitis: Many cats live with intermittent flare-ups managed with diet, appetite stimulants, and anti-nausea medication. Some progress to exocrine pancreatic insufficiency (EPI, requiring enzyme supplementation) or diabetes mellitus.
• Triaditis: Long-term management of all three organ systems is typically required. Monitoring should include periodic Spec fPL, liver enzymes, cobalamin, and ultrasound as clinically indicated.

For cats with chronic or recurrent pancreatitis, monitoring every 6–12 months with Spec fPL and liver enzymes can help catch flares early — before the cat stops eating and develops secondary complications like hepatic lipidosis.

What to ask your veterinarian

• My cat has stopped eating and is hiding. What blood tests do you recommend? Ask specifically about Spec fPL, not just a basic chemistry panel.
• If the Spec fPL is normal but my cat is still not eating, what is the next step? A normal Spec fPL does not rule out pancreatitis. Abdominal ultrasound and additional workup may be needed.
• Should we check for triaditis? If pancreatitis is diagnosed or suspected, evaluating the liver and intestines concurrently is important.
• How will you manage nutrition if my cat will not eat? Early nutritional support is critical. Ask about appetite stimulants and feeding tube options if voluntary eating does not resume quickly.
• What follow-up monitoring do you recommend? For cats diagnosed with chronic pancreatitis or triaditis, periodic recheck blood work and ultrasound can help manage the condition proactively.

Sources

• ACVIM Consensus Statement on Pancreatitis in Cats (Forman et al., 2021): https://pmc.ncbi.nlm.nih.gov/articles/PMC7995362
• Merck Veterinary Manual: Pancreatitis in Dogs and Cats: https://www.merckvetmanual.com/digestive-system/the-exocrine-pancreas/pancreatitis-in-dogs-and-cats
• dvm360: Diagnosing and Managing Feline Pancreatitis (IDEXX sponsored roundtable): https://www.dvm360.com/view/diagnosing-and-managing-feline-pancreatitis-sponsored-idexx-laboratories
• Clinician's Brief: How to Recognize, Diagnose, and Treat Pancreatitis in Cats: https://www.cliniciansbrief.com/article/pancreatitis-cats
• Veterinary Partner (VIN): Pancreatitis in Cats: https://veterinarypartner.vin.com/doc?id=4951457&pid=19239
• VetsandClinics: Feline Triaditis and Pancreatitis — Causes, Diagnosis and Treatment: https://vetsandclinics.com/en/library/feline-triaditis-and-pancreatitis-causes-diagnosis-and-treatment
• De Cock HEV et al. (2007). Prevalence and histopathologic characteristics of pancreatitis in cats. Vet Pathol, 44(1), 39–49.
• Ferreri JA et al. (2003). Clinical differentiation of acute necrotizing from chronic nonsuppurative pancreatitis in cats. JAVMA, 223(4), 469–474.
• Purina Institute: Pancreatitis in Cats: https://www.purinainstitute.com/centresquare/therapeutic-nutrition/pancreatitis-in-cats
• VetLens: Pancreatitis in Cats — Symptoms, Bloodwork, Treatment (2026): https://www.vetlens.com/blog/pancreatitis-in-cats