I have 37 years of experience and specialize in the field of veterinary dermatology and allergy, with specific knowledge of systemic and topical therapy, infectious skin disease and allergic skin diseases. I have published on such topics as bacterial, yeast and fungal infections, allergy (flea allergy, food allergy, atopic dermatitis) and efficacy of drugs. I have testified on efficacy of an over-the-counter product for flea prevention and assessment as to cruelty in confined sick dogs.