What might make you suspect this dermatologic disease in dogs and cats.
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“Lesions on the concave pinnae should increase your clinical suspicion of pemphigus foliaceus since few other pustular conditions affect the concave pinnae. Mucosal lesions are rare in pemphigus foliaceus.”
-Kathy C. Tater, DVM, DACVD, and Thierry Olivry, DrVet, PhD, DECVD, DACVD
From Canine and feline pemphigus foliaceus: Improving your chances of a successful outcome