Sandra Diaz, DVM, MS, DACVD, is an associate professor at The Ohio State University. Dr. Diaz earned her DVM from Universidad Santo Tomas in Santiago, Chile, and her MS from University of Minnesota, where she also completed a residency in comparative dermatology. She lectures in Spain, Central America, and South America. Dr. Diaz has authored several articles and book chapters. Her research interests include disorders of hair and hair growth, canine and feline allergic disorders, feline and canine otitis, and use of dermoscopy in the diagnosis of dermatologic disorders.