Inflammatory bowel disease (IBD) in cats
IBD is long-term inflammation of the gut lining. It can look a lot like small-cell intestinal lymphoma, so testing matters.
Last updated: October 2026 · 2 sources · see sources
Signs to watch for
- Chronic vomiting
- Diarrhea
- Weight loss
- Changes in appetite
Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.
How vets diagnose it
Bloodwork, B12 levels, ultrasound and often biopsies are used to diagnose IBD. [2]
How it's treated
Treatment can include diet trials, steroids like prednisolone or budesonide, and B12 supplements. [2]
Medicines your vet may mention: Prednisone & Prednisolone, Budesonide, Vitamin B12 (Cobalamin). We don't list doses; your vet will decide what fits your pet.
What it costs to diagnose and manage
| Item | Typical US price | Src |
|---|---|---|
| Diagnosis (exam and tests) | $500–$1,500 | [1] |
| Ongoing treatment, per month | $50–$200 | [1] |
| Ongoing treatment over a year (monthly range × 12) | $600–$2,400 | [1] |
These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.
Outlook
Most cats can be managed well, though flare-ups happen. [2]
Common questions
What is inflammatory bowel disease (IBD) in cats?
IBD is long-term inflammation of the gut lining. It can look a lot like small-cell intestinal lymphoma, so testing matters.
What are the signs of inflammatory bowel disease (IBD)?
Common signs include: chronic vomiting, diarrhea, weight loss, changes in appetite.
How do vets diagnose inflammatory bowel disease (IBD)?
Bloodwork, B12 levels, ultrasound and often biopsies are used to diagnose IBD.
How is inflammatory bowel disease (IBD) treated?
Treatment can include diet trials, steroids like prednisolone or budesonide, and B12 supplements.
How much does inflammatory bowel disease (IBD) cost to treat?
Diagnosis (exam and tests): $500–$1,500; Ongoing treatment, per month: $50–$200; Ongoing treatment over a year (monthly range × 12): $600–$2,400. Costs vary with severity, tests, your pet's size and where you live.
Related
This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.