Dog Pemphigus and Autoimmune Skin Disease

Pemphigus foliaceus is the most common autoimmune skin disease in dogs, causing painful pustules and crusting that requires long-term immunosuppressive treatment.

Key Facts

Pemphigus foliaceus (PF) is an autoimmune blistering disease targeting keratinocytes in the skin
It causes pustules, crusts, scaling, and hair loss most commonly on the face, ears, and footpads
Chow Chows, Akitas, and Dobermans are predisposed breeds
Diagnosis requires skin biopsy; cytology of pustule contents also supports diagnosis
Treatment typically involves immunosuppressive doses of prednisolone, often with adjunct drugs
Many dogs require lifelong treatment; remission without medication is possible but uncommon

Welfare Considerations

Pemphigus causes chronic welfare harm through painful skin lesions that are vulnerable to secondary infection, persistent itching, and the side effects of long-term immunosuppressive therapy including increased thirst, weight gain, and susceptibility to infections. Footpad involvement particularly reduces mobility and causes pain with normal walking. Careful dose management - tapering to the lowest effective dose that maintains remission - is essential to minimize immunosuppressive side effects while controlling disease. Regular veterinary monitoring allows early identification of secondary infections and treatment adjustments that maintain quality of life.

What You Can Do

Seek veterinary dermatology referral for suspected pemphigus for accurate diagnosis and tailored treatment
Monitor for secondary skin infections, which are common in immunosuppressed dogs
Apply moisturizing barrier creams to cracked footpads to reduce pain and prevent fissuring
Track symptom severity using a consistent scale to guide treatment adjustments
Report all new symptoms to your veterinarian - treatment changes may be needed quickly
Ask about azathioprine or mycophenolate as steroid-sparing adjuncts to reduce long-term steroid dose