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Published on: June 24, 2020
Epidemiological and Clinical Features of Dermatophytosis in a Referral Practice in Italy: A Retrospective Study in
Silvia Colombo1, Elisabetta Fabbri2, Fabia Scarampella1
1Studio Dermatologico Veterinario, Milan, Italy.
Background:
Dermatophytosis is an infectious skin disease caused by fungal organisms collectively known as dermatophytes. In cats, the most commonly isolated dermatophyte is Microsporum canis. Known predisposing factors include young age, long hair coat, lifestyle, warm geographical locations and Persian breed.
Hypothesis/Objectives:
The aim of this retrospective study was to evaluate the prevalence of dermatophytosis in cats of different breeds in a dermatological referral practice in Italy over a 9 year period, highlighting clinical and breed-related differential features.
Animals:
1457 cats of different breeds, 54 of which were affected by dermatophytosis.
Materials And Methods:
Cases of feline dermatophytosis diagnosed between 1 January 2016 and 31 December 2024 were searched. Cases were included based on availability of signalment, clinical presentation and confirmation of diagnosis with positive microscopic examination of hair shafts and/or Wood's lamp examination and positive fungal culture.
Results:
The prevalence of feline dermatophytosis in our sample was 3.7%, with M. canis identified in all cases. Dermatophytosis was more frequently diagnosed in Persian cats (14 of 66, 21.2%) and Persian-related breeds, including British shorthair (10 of 39, 25.6%), exotic shorthair (two of 22, 9.1%) and Scottish fold (two of 20, 10%). Among Domestic short hair (DSH) cats, the prevalence was 2.1%. Young age was a predisposing factor and in pure-bred kittens contagion most likely occurred at the breeder's facility. Pruritus was reported in 63% of the cats.
Conclusions And Clinical Relevance:
The disease was frequently diagnosed in Persian cats and Persian-related breeds. Cats aged < 1 year are predisposed. Pruritus is common, regardless of the breed.
Insights
Feline dermatophytosis, primarily caused by Microsporum canis, is most prevalent in Persian and related breeds, especially in young cats. Pruritus is a common symptom across all breeds.
Area of Science:
- Veterinary Dermatology
- Mycology
- Epidemiology
Background:
- Dermatophytosis is a common fungal skin infection in cats, often caused by Microsporum canis.
- Predisposing factors include young age, long hair, and specific breeds like Persians.
Purpose of the Study:
- To determine the prevalence of feline dermatophytosis in Italy over a nine-year period.
- To identify breed-specific risk factors and clinical features of the disease.
Main Methods:
- A retrospective study analyzed 1457 cats diagnosed between 2016 and 2024.
- Diagnosis was confirmed via microscopy, Wood's lamp examination, and fungal culture.
Main Results:
- The overall prevalence of dermatophytosis was 3.7%, with Microsporum canis identified in all cases.
- Persian cats (21.2%) and related breeds showed higher prevalence compared to Domestic Shorthair cats (2.1%).
- Young age (<1 year) was a significant predisposing factor, with contagion often occurring at breeder facilities.
Conclusions:
- Persian and related breeds are disproportionately affected by dermatophytosis.
- Young cats are highly predisposed to this fungal infection.
- Pruritus is a frequent clinical sign, irrespective of breed.
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