🐾 Animal Welfare Hub

Key Facts

• Caused by Mycobacterium lepraemurium and related slow-growing mycobacteria
• Produces painless to mildly sensitive skin nodules that ulcerate and discharge
• More common in young cats and in certain geographic regions
• Treatment with combination antibiotics over many months can achieve remission
• Surgical excision of early lesions may be curative when lesions are limited

Welfare Considerations

Feline leprosy welfare management requires committing to prolonged antibiotic treatment without clear endpoint. Affected cats may show minimal initial welfare impact from the relatively painless nodules, but progressive ulceration and secondary infection cause increasing discomfort. The chronic nature of infection means cats require many months of antibiotic treatment with potential side effects. Cure is achievable but not guaranteed, and relapse after treatment cessation occurs. For cats with limited lesions amenable to surgery, excision provides an alternative with potentially shorter welfare burden from treatment.

What You Can Do

• Seek veterinary assessment for any persistent skin nodules in your cat
• Work with your vet on the most appropriate treatment approach for your cat's case
• Commit to the full long-term antibiotic treatment course without gaps
• Monitor lesion progress and report any worsening to your vet promptly
• Discuss surgical options for limited, accessible lesions with your veterinarian