Canine juvenile cellulitis
Canine juvenile cellulitis (juvenile pyoderma, juvenile sterile granulomatous dermatitis and lymphadenitis, or puppy strangles) is an immune-mediated disease of young dogs characterized by sterile granulomatous and pustular dermatitis.
Early clinical signs usually consist of fever, joint pain and lameness, and facial dermatitis with edematous cellulitis. The dermatitis usually progresses to the ears as otitis externa and characteristic draining fistulas are common. The affected skin is often painful but not pruritic.
Lymphadenopathy and neurological symptoms are sometimes observed.
Because this disease is observed at the time of vaccinations and juvenile cellulitis has preceded diseases such as hypertrophic osteodystrophy, immunosuppression associated with vaccines cannot be eliminated as an etiological agent.
Diagnosis is often based on presenting clinical signs and response to steroids, but histopathological analysis of biopsies is usually definitive, largely depicting sterile pyogranulomatous inflammation.
A differential diagnosis would include pemphigus foliaceous and juvenile staphylococcal pyoderma (puppy pimples).
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