Abstract
Trichophyton rubrum is rarely isolated from dogs with dermatophytosis. It is an anthropophilic dermatophyte commonly causing infections in humans. A 4-year-old female Shih Tzu dog was brought to the veterinary clinic with a history of circular, crusted and non-pruritic alopecia lesions located on the head. Routine blood tests, skin scrapes and bacteriological culture revealed no abnormalities. However, Trichophyton rubrum was isolated from the fungus culture. The intradomicilar condition of the dog allows contact with its frequent hosts, the man. The fungicidal treatment was implemented with shampoo (ketoconazole base 2% + chlorhexidine 2%) and oral Itraconazole at a dose of 10 mg / kg once a day, for 28 days. The lesions healed completely and the hair grew back within a month. No recurrence occurred during the 4-month follow-up. T. rubrum should be included in the differential diagnosis of crusted skin lesions in dogs.
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