Pancreatitis in cats

Symptoms an owner can spot at home

• Lethargy and hiding, often the only sign owners can name
• Reduced or absent appetite over days
• Dehydration, weight loss, and a poor coat
• Vomiting in some cats, but far less consistently than in dogs; abdominal pain is frequently silent
• Jaundice (yellow gums or eyes) when the biliary system is involved

When to see a vet

• Any cat that has not eaten for 24 hours needs to be seen; feline hepatic lipidosis can develop from a short period of anorexia
• Lethargy plus dehydration, tacky gums or skin that stays tented
• Yellow discolouration of the gums, inner ears, or whites of the eyes, urgent
• Repeated vomiting, or vomiting with abdominal guarding
• Any diabetic cat with new appetite loss, pancreatitis and diabetes commonly overlap and destabilise each other

What it is

Pancreatitis is premature activation of digestive enzymes within the pancreas, causing local inflammation and, in severe cases, systemic effects. Feline disease diverges sharply from the canine version. Most cats have the chronic form, most have no identified cause, and dietary indiscretion, the classic canine trigger, is not the usual story. Necropsy studies have found pancreatic inflammation in a striking proportion of cats with no clinical signs at all, so the disease is far more common than the diagnosis rate implies.

Feline anatomy explains the clustering with other diseases. In most cats the pancreatic duct joins the common bile duct before entering the duodenum, so inflammation readily involves the biliary tree and the small intestine. Concurrent pancreatitis, cholangitis, and inflammatory bowel disease is called triaditis, and finding one should prompt a look for the others. Diabetes mellitus is the other frequent companion, in both directions.

How vets diagnose it

Feline pancreatic lipase immunoreactivity (fPLI, run as Spec fPL or an in-clinic equivalent) is the most useful blood test; general amylase and lipase are not reliable in cats. Abdominal ultrasound in experienced hands supports the diagnosis and, just as usefully, screens the liver, biliary tree, and intestinal wall for the triaditis components. Neither test is perfectly sensitive, so a normal result in a strongly suggestive case does not close the question.

• Baseline bloodwork checks liver enzymes, bilirubin, glucose, and renal values.
• Cobalamin (B12) and folate are commonly measured, since concurrent intestinal disease frequently causes B12 deficiency.
• Histopathology is definitive but requires biopsy and is reserved for cases where it changes management.

Treatment overview

This is editorial overview, not a treatment plan; your vet builds the plan. Care is supportive and centres on three pillars: aggressive fluid therapy for dehydration and perfusion, genuine analgesia (feline abdominal pain is chronically under-treated because cats hide it), and early nutritional support. Antiemetics and appetite stimulants are standard adjuncts.

The old instruction to withhold food is obsolete. Contemporary feline guidance favours early enteral nutrition, by assisted feeding or a feeding tube when needed, precisely because prolonged anorexia in cats risks hepatic lipidosis. Fat restriction, the mainstay in canine pancreatitis, has not been shown to carry the same benefit in cats; the diet priority is getting adequate calories in.

What owners can do

• Track intake, not just appetite. Weigh the food in and the food left; 'she picked at it' is not a number your vet can use.
• Prioritise moisture. Wet, warmed, strongly aromatic food is the most reliably accepted option in a nauseated cat, and it supports hydration at the same time.
• Use wide, shallow bowls to avoid whisker fatigue, and offer food away from the litter box and away from other cats.
• Feed small, frequent meals rather than one or two large ones during recovery.
• Give the cat a warm, quiet, low-traffic resting place; a sick cat that is being stepped over eats less.
• Weigh the cat weekly on a digital scale at home. Weight loss is the earliest objective sign of a chronic case slipping.
• If the cat is diabetic, watch glucose control closely during a flare; the two diseases destabilise each other.