A variety of dermatologic conditions affect the pinna. Rarely, a disease affects the pinna alone or the pinna is the initial site affected. As with all dermatologic conditions, a diagnosis is best made with the results of a thorough history, a complete physical and dermatologic examination, and with careful selection and evaluation of specific diagnostic tests. This overview is not all inclusive but discusses diseases that solely or commonly affect the pinna of domestic animals.
Last full review/revision October 2013 by Sheila M. F. Torres, DVM, MS, PhD, DACVD