Pemphigus Vulgaris in Dogs: Welfare Management

Key Facts

• Pemphigus vulgaris is the most severe pemphigus form with lesions at mucocutaneous junctions
• Antibodies target desmoglein-3, causing deep splitting within the epidermis
• Characteristic lesions occur at lips, nostrils, eyes, anus, prepuce or vulva and in the mouth
• Oral ulceration is prominent and prevents comfortable eating, causing rapid weight loss
• Treatment requires aggressive immunosuppression: prednisolone plus azathioprine, cyclosporine, or mycophenolate

Welfare Considerations

Pemphigus vulgaris causes severe welfare suffering through painful oral and mucocutaneous ulceration. The oral involvement directly impairs food intake causing rapid weight loss. Lesions at mucocutaneous junctions are inherently painful areas of moisture, movement, and friction. Aggressive immunosuppression is the welfare-appropriate response despite its risks — the disease severity justifies intensive treatment. Dermatology specialist referral is strongly recommended as management is complex.

What You Can Do

• Seek dermatology specialist referral for diagnosis confirmation and treatment planning
• Provide soft or liquid food to maintain nutrition while oral lesions are active and painful
• Initiate aggressive immunosuppression as directed — disease control is the priority
• Monitor for opportunistic infections during immunosuppression and treat promptly
• Track quality of life using validated pain scoring to assess treatment response