Canine Dermatophytosis Caused by Trichophyton Rubrum: Case Report
January 2021
in “
Revista brasileira de higiene e sanidade animal
”
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Studysummary In this case report, Trichophyton rubrum was isolated from a dog with dermatophytosis, and treatment with ketoconazole shampoo and oral itraconazole led to complete healing and no recurrence in follow-up. Our plain-language summary of this paper — not a Tressless recommendation.
A 4-year-old female Shih Tzu dog presented with circular, crusted, and non-pruritic alopecia lesions on its head. Despite normal routine blood tests, skin scrapes, and bacteriological cultures, Trichophyton rubrum, an anthropophilic dermatophyte typically infecting humans, was isolated from a fungal culture. The dog's indoor living conditions likely facilitated transmission from humans. Treatment with a ketoconazole and chlorhexidine-based shampoo and oral Itraconazole at 10 mg/kg daily for 28 days resulted in complete healing and hair regrowth within a month, with no recurrence over a 4-month follow-up period. The study suggests that T. rubrum should be considered when diagnosing crusted skin lesions in dogs.
