Members' NAVLE study guide

Feline Inflammatory Bowel Disease

1,652 words 7 min read 1 figure Reviewed November 14, 2026

Feline inflammatory bowel disease (IBD) describes a chronic enteropathy with persistent signs and a histological infiltrate of inflammatory cells but no identifiable cause. The key exam skill is the order of work: exclude other disease, trial food and deworming, then biopsy to separate IBD from low-grade lymphoma before committing to immunosuppression.

Key facts

Inflammatory bowel disease at a glance
  • Species and system: cat, small intestine most often; stomach and colon can be involved.
  • Definition: GI signs for 3 weeks or longer, with inflammatory infiltrate on biopsy and no other cause found.
  • Signalment: mean age of onset about 6.9 years; purebred cats may be over-represented.
  • Commonest form: lymphocytic-plasmacytic enteritis; eosinophilic is next.
  • Classic presentation: weight loss, intermittent progressing to daily vomiting, diarrhoea and anorexia.
  • Zoonotic or reportable: no.

What's inside

13 sections in the full guide
  1. Key facts
  2. How the NAVLE tests this
  3. Cause and pathophysiology
  4. Clinical signs
  5. Diagnosis
  6. Differential diagnoses
  7. Treatment and management
  8. Prognosis
  9. Associated disease: the pancreas and liver
  10. Client counselling
  11. Quick review
  12. Test yourself
  13. References
The full guide also has 5 tables, 1 figure, 3 self-test questions and 6 references, available to NAVLE members.

Read the full study guide

The full guide is part of every NAVLE plan, with diagnosis and treatment tables, figures, a quick review and self-test questions. Start a free trial to try the question bank, or log in if you are already a member.

Read the free overview article A shorter, free article on Inflammatory bowel disease on the NavleExam blog.

More guides

Feline · Gastrointestinal/Digestive